Name ______

Momentum Practice Problems

Block _____ Date ______

______1. A 7 kg blob of putty moving at 1.4 m / sec splats into a 7 kg blob of putty at

Rest. Calculate the speed of the two stuck-together blobs of putty

immediately after colliding.

GIVEN FIND FORMULA SUBSTITUTE SOLUTION

______2. What would be the speed of the two blobs if the one at rest had a mass of

14 kg ?

GIVEN FIND FORMULA SUBSTITUTE SOLUTION

______3. How much impulse is created by a force of 150 N acting on a cart for

0.75 seconds ?

GIVEN FIND FORMULA SUBSTITUTE SOLUTION

______4. A car with a mass of 950 kg is moving at a velocity of 25 km / hr. (9.14 m/sec)

What braking force is needed to bring it to a halt in 10 seconds ? (Ft = Δmv)

GIVEN FIND FORMULA SUBSTITUTE SOLUTION

5. A group of astronauts go for a space walk (EVA) and form a circle outside of the space craft.

Simultaneously the astronauts begin to toss a bunch of balls to one another but always to the person on their left. What happens to the circular formation ?

______

Physics I Honors Momentum Practice Problems Houts

______6. Wasted energy from a car engine or from 2 objects rubbing past one another is

often converted into what form ?

______7. A large fish with a mass of 4.0 kg swimming at a speed of 6 m/sec swims up

and gobbles down (eats) a small fish that has a mass of 1.5 kg. that is

swimming toward the large fish at a speed of 3 m/sec. What is the final speed

of the larger fish after it’s meal ?

GIVEN FIND FORMULA SUBSTITUTE SOLUTION

______8. The large 4.0 kg fish is later swimming at a speed of 5 m/sec and swims up

and gobbles down (eats) a small fish that has a mass of 0.75 kg. that is

swimming away from the large fish at a speed of 4 m/sec. Now what would be

the final speed of the larger fish after it’s meal ?

GIVEN FIND FORMULA SUBSTITUTE SOLUTION

9 A rain drop and the windshield of a moving car collide.

Indicate whether the following statements are True or false.

_____ 9a. The forces of impact on the rain drop and the car are the same magnitude

(size) .

_____ 9b. The change in speed of the rain drop and the car are the same.

_____ 9c. The changes in momentum on the rain drop and on the car are the same size.