A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Find the time to reach the max height of the projectile's path to the nearest hundreth.
Question 25
25.
Question 26
26.
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Find the max height of the projectile's path to the nearest tenth.
Question 27
27.
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Find the height the projectile falls to the goal post to the nearest tenth.
Question 28
28.
Question 29
29.
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Find the time from the heighest point that the projectile falls to the goal post to the nearest hundreth.
Question 30
30.
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Find the total time in the air to the nearest hundreth.
Question 31
31.
Question 32
32.
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground. How far horizontally did the ball travel? (nearest tenth)
Question 33
33.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east.
What is the x-component of the riverboat's velocity? (nearest hundreth)
Question 34
34.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east.
What is the x-component of the current's velocity? (nearest hundreth)
Question 35
35.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east.
What is the x-component of the velocity relative to shore (Full velocity)? (nearest hundreth)
Question 36
36.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east.
What is the y-component of the riverboat's velocity? (nearest hundreth)
Question 37
37.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east.
What is the y-component of the current's velocity? (nearest hundreth)
Question 38
38.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east.
What is the y-component of the velocity relative to shore (Full velocity)? (nearest hundreth)
Question 39
39.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east. The river is 250m across.
What is the time to cross the river? (nearest hundreth)
Question 40
40.
A riverboat is crossing a river moving 47 m/s at 15 degrees north of east. It encounters a current moving 5 m/s at 150 degrees north of east. The river is 250m across. How far downstream will the riverboat have travelled once it reaches the far shore? (nearest hundreth)
Projectiles are analyzed using their _________ and ___________ components of motion.
Resultant and Scalar
Parabolic and Vector
Projectile and Range
Horizontal and Vertical
The shape of a trajectory of a simple projectile is a __________________.
Magnitude
Parabola
Circle
Trapezoid
3. A ball is thrown through the air. At the top of its path, its vertical acceleration is
About 50 m/s^2, downward
9.8 m/s^2, downward
0 m/s^2
4.9 m/s^2, downward
9.8 m/s, downward
The diagram below shows a cannon firing a cannon ball at 135 m/s horizontally from a height of 750 meters.
What is the initial velocity of the cannon in the “y” direction (vertical velocity)?
The diagram below shows a cannon firing a cannon ball at 135 m/s horizontally from a height of 750 meters.
What is the evdience for the initial velocity of the cannon in the “y” direction (vertical velocity)?
The initial velocity is evenly split between the x and y directions
Some of the initial velocity is in the x-direction and most of it is in the y-direction
All of the initial velocity is in the x-direction.
Most of the initial velocity is in the x-direction.
The diagram below shows a cannon firing a cannon ball at 135 m/s horizontally from a height of 750 meters.
What is the reasoning for the evdience for the initial velocity of the cannon in the “y” direction (vertical velocity)?
As time proceeds the cannonball's y-direction motion changes
As time proceeds the cannonball's x-direction motion changes
The x and y direction motions are independent of each other.
The x and y direciton motions are dependent on each other.
The diagram below shows a cannon firing a cannon ball at 135 m/s horizontally from a height of 750 meters.
What is the final velocity of the cannon ball in the “x” direction (horizontal velocity)?
The diagram below shows a cannon firing a cannon ball at 135 m/s horizontally from a height of 750 meters.
What is the evidence for the final velocity of the cannon ball in the “x” direction (horizontal velocity)?
The vertical velocity does not change.
The horizontal velocity does not change.
The vertical velocity changes.
The horizontal velocity changes.
The diagram below shows a cannon firing a cannon ball at 135 m/s horizontally from a height of 750 meters.
What is the reasoning for the evidence for the final velocity of the cannon ball in the “x” direction (horizontal velocity)?
The only force acting is gravity which is a horizontal force and produces no x-direction acceleration.
The only force acting is gravity which is a vertical force and produces an x-direction acceleration.
The only force acting is gravity which is a vertical force and produces no x-direction acceleration.
The only force acting is gravity which is a horizontal force and produces an x-direction acceleration.
An airplane is going to drop supplies to a remote island in the south pacific as shown below. If the airplane is flying with a constant horizontally at 125 m/s and it takes the package 6.5 s to fall, answer the following questions.
How far from the island horizontally does the pilot release the package?
813 m
114 m
117 m
719 m
An airplane is going to drop supplies to a remote island in the south pacific as shown below. If the airplane is flying with a constant horizontally at 125 m/s and it takes the package 6.5 s to fall, answer the following questions.
Where is the plane when the package lands hits the island?
Crashed in the pacific
Right above the island
Almost to the island
Just past the island
An airplane is going to drop supplies to a remote island in the south pacific as shown below. If the airplane is flying with a constant horizontally at 125 m/s and it takes the package 6.5 s to fall, answer the following questions.
Which of the graphs below represents the horizontal velocity of the projectile as it varies with time?
An airplane is going to drop supplies to a remote island in the south pacific as shown below. If the airplane is flying with a constant horizontally at 125 m/s and it takes the package 6.5 s to fall, answer the following questions.
Which of the graphs below represents the vertical velocity of the projectile as it varies with time?
A projectile is launched into the air with a horizontal velocity of 20 m/s and a vertical velocity of 30 m/s, as shown. The figures shows the positions of the ball at 1 second intervals. The acceleration due to gravity is 10 m/s2.
Use the positions shown to answer the following:
Where is the vertical velocity 20 m/s up?
C
F
A
E
B
D
A projectile is launched into the air with a horizontal velocity of 20 m/s and a vertical velocity of 30 m/s, as shown. The figures shows the positions of the ball at 1 second intervals. The acceleration due to gravity is 10 m/s2.
Use the positions shown to answer the following:
Where is the vertical velocity zero?
D
A
B
E
F
C
A projectile is launched into the air with a horizontal velocity of 20 m/s and a vertical velocity of 30 m/s, as shown. The figures shows the positions of the ball at 1 second intervals. The acceleration due to gravity is 10 m/s2.
Use the positions shown to answer the following:
Where is the horizontal velocity 20 m/s?
E
B
At all points
C
D
A
A gardener holds the nozzle of a hose constant at a small angle above the horizontal and observes the stream of water coming from the nozzle. If the pressure of the water is increased so that the water leaves the nozzle at a greater speed,
the height and width of the water’s path will increase
the width of the water’s path will increase but the height will remain the same
the height of the water’s path will increase but the width of the path will remain the same.
the height and width of the water’s path will remain the same.
A car traveling at the legal speed limit has a velocity of -vcar with respect to the road. You are traveling in the opposite direction at the legal speed limit with respect to the road. As the first car approaches you, what is its velocity relative to you?
A passenger on a bus moving east sees a man standing on a curb. From the man’s perspective, the passenger appears to
Move east at a speed that is equal to the bus’s speed
Move west at a speed that is less than the bus’s speed
Stand still
Move east at a speed that is less than the bus’s speed
Move west at a speed that is equal to the bus’s speed
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
What are the givens?
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground. How far horizontally did the ball travel?
Which is the unknown?
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Which equation would you use to find the time to reach the max height of the projectile's path?
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Which final equation would you use to find the time to reach the max height of the projectile's path?
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Which equation would you use to find the max height of the projectile's path?
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Which equation would you use to find the time from the heighest point that the projectile falls to the goal post?
A ball is kicked off the ground at an initial velocity of 15.0 m/s at an angle of 30 degrees to the horizontal. It miraculously lands on the center of a goal post 2m above the ground.
Which equation would you use to find the horizontal distance traversed by the ball?