Open note, not open neighbor or google. Put phones away as usual.
Equations:
W=Fd
P=W/t or P=Fd/ t
KE= 1/2 mv^2
Open note, not open neighbor or google. Put phones away as usual.
Equations:
W=Fd
P=W/t or P=Fd/ t
KE= 1/2 mv^2
Question 1
1.
Question 2
2.
Question 3
3.
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
Question 9
9.
If you triple the velocity of an object, the Kinetic Energy will be __________ the amount
Question 10
10.
What is the work done on a 2 kg ball that is now rolling at 10 m/s after being kicked?
Question 11
11.
How fast is rubber band released if it is 0.1 kg and had 200 J of energy as it was stretched?
Question 12
12.
Question 13
13.
Question 14
14.
A playful 4 kg penguin slides down an ice ramp. At a height of 2 m, the penguin’s velocity is 8 m/s. What is the Kinetic Energy at 2 m? Do not worry about including units.
Question 15
15.
A playful 4 kg penguin slides down an ice ramp. At a height of 2 m, the penguin’s velocity is 8 m/s. What is the Potential Energy at 2m? Do not worry about including units.
Question 16
16.
What is the weight of a tightrope walker that is 7.8 m above the ground with 2,598.96 J of energy?
Match the units
Newtons
Joules
Watts
Work
Kinetic Energy
Power
Force
Potential Energy
Mechanical Energy
A horizontal force of 300 N is applied to move a 30kg giant teddy bear 10m across a level floor in a store to prepare for crazy holiday shoppers. What net work is done on the teddy bear?
300 J
3,000 J
90,000 J
9,000 J
Work is done when
distance is zero
distance is not zero
force and displacement are perpendicular
force is zero
A motor is more powerful if
the time interval for doing work is decreased
the time interval for doing work is increased
work is decreased and time is decreased
work is decreased
What is the work done by a 0.4N cricket on a 21,000N car as the cricket sits on the car while the car backs up on a 11m driveway at 3.0 m/s.
0.044J
231,004.4J
231,000J
0J
In the Amazing Race, Team Llama took 2 minutes to take a 15 m path down a hill. Mickey and Minnie took 1 minute to take a 25 m path down a mountain. Jack and Jill took a path of 30 m after reaching the bottom in 25 seconds. Which team was the most powerful?
Jack and Jill
Team Llama
Mickey and Minnie
All Teams Equally Powerful
What is the power output by the child as she pulls a 250N toy up 1.2m onto her bunk bed in 0.3s?
1000 W
251.5 W
0 W
90 W
A student walks to school at a constant velocity carrying a 3N backpack 30m across level ground. What is the net work done on the backpack?
0 J
33 J
90 J
10 J
What is the mass of an object with 482 J of potential energy at a height of 3 m?
16.4 kg
1446 kg
160.7 kg
14170.8 kg
How much KE does a 50 kg runner have when running at 10 m/s?