1. Object A has a small mass than object B. But both have the same momentum. Whi

Question

1.     Object A has a small mass than object B. But both have the same momentum. Which one has the largest Kinetic Energy?

a.     Object A

b.     Object B

c.     Both have same KE

2.     Object A has a small mass than object B but both have same Kinetic Energy. Which one has the largest momentum?

a.     Object A

b.     Object b

c.     Both have same KE

3.     Two carts of uneven masses (A being heavier than B) are moving in a constant velocity towards each other in a frictionless track. They collide against each other and stick together. Which cart has greater change in momentum?

a.     Cart A

b.     Cart B

c.     Both have equal change in momentum.

d.     None of the above

4.     In Q.3, which cart has greater acceleration after the collision?

a.     Cart A

b.     Cart B

c.     Both have same acceleration

d.     None of the above

5.     A car of mass 1600 kg moving with a constant speed of 24m/s collides with an SUV with a mass of 3000 kg.  After the collision, both vehicles come to absolute halt. What was the speed of the SUV before it collided with the car?

Please HELP and explain Thanks.  

Explanation / Answer

1-b

2-a

3-a

4-a

5-

1600*24+3000*v

v=12.8m/s in opposite of 1600kg

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