Conservation Of Momentum Practice Question Preview (ID: 24252)


Practice Conservation Of Momentum Problems. TEACHERS: click here for quick copy question ID numbers.

A 175 kg ball moves with a speed of 25 m/s to the right. The ball collides with a second 185 kg ball moving in the same direction with a speed of 22 m/s. After the collision, the speed of the 185kg ball is 18 m/s to the right. New of 175kg ball?
a) 84.45 m/s
b) 29.23 m/s
c) 2.23 m/s
d) 9.34 m/s

A car of mass 750 kg travels at 40 m/s to the right. The car collides with a 1200 kg truck which is traveling at 35 m/s to the right. The two interlock as a result of the collision. What is the final velocity of the car-truck system?
a) 72.0 m/s
b) 40.0 m/s
c) 36.9 m/s
d) 35.0 m/s

A train of mass 200 kg moves with a velocity of 100 m/s to the right. The train collides with a car of mass 50 kg which is stopped on the track. After the collision, the train comes to a stop. Solve the final velocity of the car.
a) 200 m/s
b) 300 m/s
c) 400 m/s
d) 500 m/s

Tony Siragusa has a mass of 154 kg and runs with a velocity of 2 m/s. He hits 91 kg Joe Namath who is running towards him with a velocity of 4 m/s. Solve for the final velocity of the entangled players.
a) -.544 m/s
b) -.615 m/s
c) -.228 m/s
d) -.850 m/s

A 90 kg student and 60 kg student are on roller skates at rest; face to face. After they push off from each other the 90 kg student moves to the left with a velocity of 3 m/s. Solve for the final velocity of the 60 kg student.
a) 3.0 m/s
b) 4.5 m/s
c) 5.8 m/s
d) 7.3 m/s

A 92 kg fullback, running at 5.0 m/s, attempts to dive directly across the goal line for a touchdown. Just as he reaches the line he is met head-on by two 150-kg linebackers moving at 2.0 m/s. Solve for the velocity of the entangled players.
a) -.284 m/s
b) -.357 m/s
c) -140 m/s
d) -.66 m/s

During a collision, the forces on the objects are...
a) more for the heavier object
b) more on the light object
c) always zero
d) equal to on both objects

Which has more momentum?
a) a train as rest
b) a baby crawling across the floor
c) a parked dump truck
d) a baby sleeping

A 20 g bullet hit a target and slows to a stop from a velocity of 2500 ft/s in .3 seconds. Which what force does the bullet his the target?
a) 166.67 N
b) 50.8 N
c) 16666.67N
d) 0 N

A 1650 kg car travels with a velocity of 30 miles/hour and hits a wall. The wall applies a force and causes the car to travel backwards at a speed of 2 mph in 0.5 seconds. What force does the wall apply on the car?
a) -28.6 N
b) -56 N
c) 25 N
d) 3.14 N

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