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Inelastic Calculations

Last updated 30 days ago

9 questions

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Question 1

1.

What about an inelastic collision allows you to simplify the formula?

Both objects start at rest, so there is no initial momentum.

Both objects have the same mass.

Both objects have the same initial velocity.

Both objects have the same final velocity.

Question 2

2.

Which situation describes an inelastic collision?

Two ice skaters push off each other and move to opposite sides of the rink.

A train hits a car and both go down the tracks together

A linebacker tackles the QB and both go flying together.

None of these

Question 3

3.

Which situation describes an inelastic collision?

When soft mudball is thrown against the wall, will stick to the wall.

Mario's kart hits Yoshi's and bounces off.

None of these

Question 4

4.

A 5.0-kg meatball is moving with a speed of 7.0 m/s directly toward a 2.0 kg meatball which is at rest. The two meatballs collide and stick together. What is their velocity immediately after the (inelastic) collision?

Question 5

5.

A 13,500 kg railroad freight car travels on a level track at a speed of 2.5 m/s. It collides and couples with a 15,000 kg second car, initially at rest and with brakes released. What is the speed of the two cars after collision?

Question 6

6.

A 50 kg girl skates at 2.5 m/s on an ice rink toward her 75 kg friend who is standing still, with open arms. As they collide and hold each other, what is the speed of the couple?

Question 7

7.

Two objects, A and B, with masses of 3.2 kg and 1.8 kg, move on a frictionless horizontal surface. Object A moves to the right at a constant speed of 5.1 m/swhile object B is stationary. They collide and stick together (a perfectly inelastic collision). What is these blocks' final velocity?

Question 8

8.

A 2400 kg car traveling at 36 m/s collides with a 3200 kg car that is at rest. The two bumpers lock and the cars move forward together. What is their final velocity?

Question 9

9.

A bullet with a mass of 0.020 kg collides inelastically with a wooden block of mass 2.5 kg, initially at rest. After the collision, the bullet + block has a speed of 0.6 m/s. What was the initial speed of the bullet?