An objects resistance to change in motion is called its
Which of these describes an object at rest?
A complete free body diagram of a skydiver would show a force being exerted by air resistance. The faster the skydiver falls, the more air resistance there will be. Eventually air resistance will equal the force of gravity. This is called terminal velocity. When a 65 kg skydiver reaches terminal velocity, what is the skydiver's acceleration?
The 65 Kg skydiver from the previous question, remember them? What is the approximate force of resistance acting on them at terminal velocity?
If the same force were applied to a 1 Kg hamster and a 200 Kg gorilla like Mr. Love, what would you expect?
A hammer drives a nail into Mr. Love's ex-wife's coffin. Identify the action-reaction pair and compare forces exerted by each.
Which of these forces is the greatest from the previous question?
The 'normal' force (Fn) acting on an object resting on a flat surface is equal to ...
If a 2 Kg bicycle drives head-on into a 10,000 Kg moving train, which experiences the greater force?
In a typical question about a bicycle colliding with a train, which will experience the greater acceleration?
If a 5 Kg object is being pulled to the right at constant velocity...
Which will cause more friction when dragged across a tile floor, a 10 Kg statue or a 500 Kg statue? (Remember, µ us the coefficient of friction)
Taylor Swift pushes a 250 Kg crate full of costumes from her Eras tour. If she applies a 600 N force and encounters a -200N Ff (force of friction), what is the acceleration of the crate in meters per second squared?
14) Momentum is a vector (it has direction). How do you calculate momentum (p)?
What is defined as 'Impulse'?
If the mass of a car is 1100 kg and its momentum is 22,000 kg m/s, what is its velocity?
A force is exerted on a 250 kg scooter for 6 s. During this time the velocity of the scooter increased from 6 m/s to 28 m/s. What is the magnitude of the force?
What is the change in momentum of a 1600 kg car going from 20 m/s to a dead stop?
If Mr. Love's ex-wife were in outer space and a 6.35 N force acted on her for 2.00 seconds what would be her change in momentum?
A 0.50 kg football is thrown with a velocity of 15 m/s. A stationary receiver catches the ball and brings it to rest in 0.020 s. What force is exerted on the receiver?
One way to lessen the force of an impact is to ...
A 0.50 kg object is at rest. A 3 N force acts on the object for a period of 1.5 s. What is the velocity of the object at the end of this interval?
A rifle recoils from firing a bullet. the speed of the rifle's recoil is small compared to the speed of the bullet because the rifle has a lot more ______ than the bullet.
A 0.05 kg marble impacts a 5 kg wooden block and embeds itself. The block (with the marble embedded) flies off of its stand at 9.0 m/s. What was the original velocity of the marble?
two stationary carts are tied together by a rope. There is a spring compressed between them and when the rope is cut the spring expands. One cart has a mass of 3.00 kg and travels east with a velocity of 0.82 m/s. What is the velocity of the other cart if it has a mass of 1.70 kg.
A 0.5 kg ball traveling 6 m/s due east collides with a 1.0 kg ball traveling in the opposite direction at -12.0 m/s. After the collision the 0.5 kg ball has a velocity of -14.0 m/s. What is the new velocity of the other ball?
A 0.111 kg moving hockey puck is caught by a 80 kg goalie who then slides on the frictionless ice at 0.076 m/s. What was the initial velocity of the hockey puck?
Momentum is a _________, so it must be analyzed in axial (x-axis and y-axis) components.
A 1.0 kg white ball moving at 10. m/s collides with a 1.2 kg red ball initially at rest. After the collision the white ball continues in the same direction at 3.0 m/s. What is the velocity of the red ball?
An airplane with a mass of 240,000 kg speeds from rest to 25 m/s in 60 seconds. How much thrust is provided by the engines?
Mr. Love' ex-wife rolled a 17 kg cannon ball at him at 4.0 m/s. The quick thinking and handsome Mr. Love quickly placed an identical cannon ball between himself and the oncoming projectile. Fortunately his ankles were spared because the two balls deflected and one passed by him at a 30 degree angle to his left while the other passed him at a 60 degree angle to his right at 2 m/s. What was the speed of the ball that passed 30 degrees to his left?
A 70 kg person runs at 5 m/s. What is their kinetic energy?
What is the difference between elastic and inelastic collisions?
A car with a mass of 700 kg moving at a speed of 30 m/s collides with a stationary truck with a mass of 1400 kg. What is the combined velocity of the car and truck together after the collision?
A 12.0 kg toy train car moving at 2.40 m/s on a straight, level train track, collides head-on with a second train car whose mass is 36.0 kg and was at rest on the track. If the collision is perfectly elastic and all motion is frictionless, what is the velocity of the heavier car after the collision.
A 12.0 kg toy train car moving at 2.40 m/s on a straight, level train track, collides head-on with a second train car whose mass is 36.0 kg and was at rest on the track. If the collision is perfectly elastic and all motion is frictionless, what is the velocity of the lighter car after the collision.
Positive work is done when force is applied on an object in which direction?
A roller coaster with mass of 2000 kg is rolling down a track at a speed of 10 m/s. A force of unknown magnitude acts on the roller coaster so that it is only moving 6 m/s. What was the work done on the roller coaster?
A cart of 200 kg is accelerated from 0 to 30 m/s in a distance of 12 m. What is the force?
The force you apply to a machine is the _____.
A 1000 watt microwave does how many Joules of work in 5 seconds?
Sigma King and El Chapo are the names given to the two skeletons in the front of Mr. Love's room. Suppose they were placed on the same side of a teeter totter (See-Saw) by an unnamed but mischievous student from Mr. Love's 5th period class. El Chapo has a mass of 10.2 Kg. Sigma King has a mass of 15.3 Kg (he has leg bones). Sigma King is 2.00 meters from the pivot and El Chapo is 3.00 meters from the pivot. how many Nm of torque are being applied to the see-saw?
Sigma King and El Chapo are the names given to the two skeletons in the front of Mr. Love's room. Suppose they were placed on the same side of a teeter totter (See-Saw) by an unnamed but mischievous student from Mr. Love's 5th period class. El Chapo has a mass of 10.2 Kg. Sigma King has a mass of 15.3 Kg (he has leg bones). Sigma King is 2.00 meters from the pivot and El Chapo is 3.00 meters from the pivot. You have already calculated how many Nm of torque are being applied to the see-saw? In order to avoid having the see saw in the previous question plummet rapidly to one side, one of the angelic students from Mr. Love's 2nd period class decides to move El Chapo to the other side of the pivot. How far on the other side should they place El Chapo to get 0 Nm net torque and balance the see saw?
A 55 cm crowbar is used to pull a nail. If 50 N of force is applied at a 30 degree angle, how many Nm of torque are being applied to the nail?
A flywheel rotating at 900.0 rpm slows down at a constant rate of 7.03 rad/sec^2. How long will it take to stop?
When Mykolas Alekna releases a discus it travels at a velocity of 3.0 m/s until it lands 75 meters away. The discus has a mass of 3 Kg and the distance from Mykolas' spine to his palm is 0.9 meters. What is the angular momentum of the discus just before he releases it?
When Mykolas Alekna releases a discus it travels at a velocity of 3.0 m/s until it lands 75 meters away. The discus has a mass of 3 Kg and the distance from Mykolas' spine to his palm is 0.9 meters. If the discus is released at an angle of 45 degrees above horizontal how long will it stay in the air before landing?
If a 10 N force is applied at a 30-degree angle, what is the vertical component of the force?
What is the net force acting on a 5 kg object accelerating at 2 m/s²?