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Two identical carts (mass = 2 kg each) collide on a frictionless track.
Cart A is moving at 5 m/s toward Cart B, which is stationary.
After the collision, Cart A comes to a stop.
What is the velocity of Cart B after the collision?
5 m/s
A 0.2 kg tennis ball traveling at 30 m/s hits a stationary 0.3 kg racquet.
After the collision, the ball rebounds at 20 m/s.
If the racquet moves forward, what is its velocity?
33.3 m/s
A 5 kg bowling ball moving at 6 m/s collides elastically with a stationary 2 kg ball.
After the collision, the 2 kg ball moves at 8 m/s.
What is the velocity of the bowling ball after the collision?
2.8 m/s
A 1.5 kg object moving at 10 m/s collides elastically with another 1.5 kg object moving at 4 m/s in the opposite direction.
After the collision, the first object moves at 4 m/s in the opposite direction.
What is the velocity of the second object after the collision?
10 m/s
Two balls collide elastically on a pool table.
Ball A (mass = 0.6 kg) is moving at 4 m/s, while Ball B (mass = 0.4 kg) is stationary.
After the collision, Ball A moves at 2 m/s.
What is the velocity of Ball B after the collision?
3 m/s
A 3,000 kg truck moving at 15 m/s crashes into a 1,000 kg car moving at 5 m/s in the same direction.
After the collision, the two vehicles stick together.
What is their final velocity?
12 m/s
Two hockey players collide on ice and stick together.
Player 1 (mass = 80 kg) is skating at 6 m/s, while Player 2 (mass = 100 kg) is skating at 4 m/s in the opposite direction.
What is their final velocity after the collision?
1.2 m/s
A 0.5 kg football is thrown at 12 m/s and caught by a stationary player with a mass of 80 kg.
After the collision, the player catches the ball and they move together.
What is their final velocity?
0.075 m/s
Two freight cars collide and couple together.
Car A (mass = 10,000 kg) is moving at 3 m/s, while Car B (mass = 15,000 kg) is stationary.
What is the velocity of the combined freight cars after the collision?
2 m/s
A 2 kg block slides on a frictionless surface at 8 m/s and collides inelastically with a stationary 3 kg block.
After the collision, they stick together.
What is their final velocity?
3.2 m/s
A 2 kg cart moving at 5 m/s collides elastically with a 3 kg cart moving at 2 m/s in the opposite direction.
After the collision, the 2 kg cart moves at 3 m/s in the opposite direction.
What is the velocity of the 3 kg cart after the collision?
4 m/s
A 0.4 kg ball traveling at 15 m/s hits a stationary wall and rebounds elastically at 12 m/s.
What is the change in momentum of the ball?
-10.8 kg x m/s
Two ice skaters push off from each other.
Skater A (mass = 50 kg) moves at 3 m/s to the left.
Skater B (mass = 70 kg) moves to the right.
What is the velocity of Skater B?
2.14 m/s to the right
A 1,200 kg car collides inelastically with a 1,000 kg car traveling at 10 m/s.
After the collision, the two cars stick together and move at 15 m/s.
What was the velocity of the 1,200 kg car before the collision?
17.5 m/s
A 0.2 kg soccer ball traveling at 25 m/s strikes another 0.3 kg soccer ball moving at 15 m/s in the same direction.
After the collision, the first ball slows to 20 m/s.
What is the velocity of the second ball after the collision?
18 m/s
A bullet (mass = 0.01 kg) is fired into a stationary 5 kg block of wood.
The bullet embeds itself in the block, and the combined system moves at 2 m/s.
What was the velocity of the bullet before impact?
10 m/s
A 10 kg object traveling at 12 m/s collides elastically with a 5 kg object traveling at 4 m/s in the same direction.
After the collision, the 5 kg object moves at 14 m/s.
What is the velocity of the 10 kg object after the collision?
6 m/s
Two trains collide and couple together.
Train A (mass = 50,000 kg) is moving at 12 m/s, while Train B (mass = 80,000 kg) is moving at 8 m/s in the same direction.
What is their final velocity?
9.33 m/s
A basketball (mass = 0.6 kg) falls from a height and hits the ground at 10 m/s.
It rebounds elastically at 8 m/s.
What is the change in momentum of the basketball?
9.6 kg x m/s
Two spacecraft dock in space.
Spacecraft 1 (mass = 10,000 kg) is moving at 200 m/s, while Spacecraft 2 (mass = 15,000 kg) is moving at 150 m/s in the same direction.
After docking, what is their combined velocity?
170 m/s
A soccer ball of mass 0.4 kg is initially at rest.
A player kicks it, applying a force of 50 N for 0.2 seconds.
a) What is the impulse delivered to the ball?
b) What is the ball's velocity immediately after the kick?
a) 10 N b)25 m/s
A 2 kg object is moving at 4 m/s.
A force of −10N is applied for 0.5 seconds to bring it to a stop.
a) What is the impulse experienced by the object?
b) What is the change in momentum of the object?
a) -5 N b) -5 kg x m/s
A tennis ball (mass = 0.2 kg) traveling at 15 m/s strikes a wall and rebounds at 10 m/s.
a) What is the change in momentum of the ball?
b) If the ball is in contact with the wall for 0.05 seconds, what is the average force exerted on the ball?
a) 5 kg x m/s b)100 N
A 1,500 kg car traveling at 20 m/s comes to a stop.
a) What is the change in momentum of the car?
b) If the braking force is 3,000N, how long does it take to stop the car?
a) -30,000 kg x m/s b) 10 seconds
A baseball (mass = 0.15 kg) is thrown at 30 m/s and is hit back at 40 m/s.
a) What is the change in momentum of the baseball?
b) If the contact time between the bat and ball is 0.02 seconds, what is the average force exerted by the bat?
a) 10.5 kg x m/s b) 525 N
A hockey puck (mass = 0.5 kg) sliding at 8 m/s is struck by a stick, giving it a final velocity of 12 m/s.
a) What is the change in momentum of the puck?
b) If the stick exerts an average force of 50N, how long was the puck in contact with the stick?
a) 2 kg x m/s b) 0.04 seconds
A truck of mass 4,000 kg moving at 18 m/s is brought to a stop over a distance of 60 m.
a) What is the change in momentum of the truck?
b) Assuming the force is constant, calculate the average braking force.
a) -72,000 kg x m/s b) -10,800 N
