A 100 kg piece moves off with a velocity of 200 m/s. A 150 kg piece moves off to the East with a velocity of 150 m/s. A 400 kg bomb sitting at rest on a table explodes into three pieces. If the man fires the gun and the bullet moves with a velocity of 350 m/s East (relative to the train), what is the velocity of the gun relative to the ground? 4. A person holding a 15 kg gun containing one 50 g bullet is riding on a train that is traveling at 75. If the man throws the ball at a velocity of 3 m/s forward, what will his resulting velocity be? 7. A 75 kg man is standing at rest on ice while holding a 4 kg ball. What is the velocity of the 85 kg football player after the collision? 6. The 92 kg football player continues moving at a velocity of 2 m/s after the collision. A 92 kg football player running at 6 m/s North collides with an 85 kg football player running at 6 m/s South. How fast is the lighter car moving after the collision? 5. The heavier car continues to move South after the collision, but slows to 25 km/h. A 1 x 10ģ kg car traveling at 100 km/h South collides with a 1 x 10ģ kg car traveling North at 100 km/h. How fast does the ball need to be moving in order to send the man off at a speed of 3 m/s? 4. A 5 kg ball hits a 75 kg man standing at rest on ice. What is the resulting velocity of the wreckage? 3. A 1200 kg car traveling North at 20 m/s collides with a 1400 kg car traveling South at 22 m/s. How fast will the man / ball combination be moving after the ball is caught by the man? 2. A 2 kg ball moving at 7 m/s is caught by a 70 kg man while the man is standing on ice. Seconds, what was the force that the foot applied on the ball? Physics 30 Worksheet # 3: Conservation of Momentum (1) 1. If the time of contact between the ball and the player’s foot was 2 x 10 A 1 kg ball traveling towards a soccer player at a velocity of 5 m/s rebounds off the soccer player’s foot at a velocity of 8 m/s. Calculate the force of friction experienced by the car. A 1500 kg car traveling at 80 km/h comes to a screeching halt in a time of 4 seconds. Calculate the force that the car’s tires exerted on the road. A 1200 car accelerates from rest to 10 m/s in a time of 4 seconds. Calculate the impulse experienced by the car. A 1500 kg car accelerates from 55 km/h to 90 km/h. What is the impulse experienced by the car? 3. A 1200 kg car traveling at 20 m/s speeds up to 30 m/s. Calculate the impulse experienced by the object. A force of 20 N is applied to a 3 kg object for 4 seconds. Calculate the rock’s momentum as it strikes the ground. A 1 kg rock is thrown up into the air from ground level, reaches a maximum height of 7 m, then returns to the ground. The ball travels up to a maximum height, then returns to the ground. A 1 kg rock is thrown up into the air from ground level at a speed of 8 m/s. Calculate the ball’s momentum at the time that it strikes the ground. A 2 kg rock is dropped from the top of a 30 m high building. Calculate the ball’s momentum after the acceleration. A 5 kg ball accelerates at a rate of 2 m/sĢ for 1 seconds. A 75 g ball is rolling at a speed of 57 cm/s. How fast is a 1 kg ball moving if it has a momentum of 4 kg/s? 4. Calculate the momentum of a 2 x 10ģ kg truck traveling at 110 km/h. Calculate the momentum of a 1 x 10ģ kg car traveling at 20 m/s.
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