# Elastic And Inelastic Collisions! Physics Trivia Questions Quiz

14 Questions | Attempts: 1343  Settings  .

• 1.
Two objects stick together and move with a common velocity after colliding. Identify the type of collision.
• A.

Elastic

• B.

Inelastic

• C.

Perfectly elastic

• D.

Perfectly Inelastic

• 2.
Two billiard balls collide. Identify the type of collision.
• A.

Elastic

• B.

Inelastic

• C.

Perfectly elastic

• D.

Perfectly inelastic

• 3.
Two balls of dough collide and stick together. Identify the type of collision.
• A.

Elastic

• B.

Inelastic

• C.

Perfectly elastic

• D.

Perfectly inelastic

• 4.
Two cars collide, lock bumpers, and move together after the collision.
• A.

Elastic

• B.

Inelastic

• C.

Perfectly elastic

• D.

Perfectly inelastic

• 5.
A tennis ball is dropped from 1.0 m, bounces off the ground, and rises to 0.85 m. What kind of collision occurred between the ball and the ground?
• A.

Elastic

• B.

Inelastic

• C.

Perfectly elastic

• D.

Perfectly inelastic

• 6.
In what kind of collision is kinetic energy always conserved?
• A.

Elastic

• B.

Inelastic

• C.

Perfectly elastic

• D.

Perfectly inelastic

• 7.
A helium atom collides with another helium atom in an elastic collision. Which of the following is true?
• A.

Both momentum and kinetic energy are conserved.

• B.

Momentum is conserved but kinetic energy is not conserved.

• C.

Kinetic energy is conserved but momentum is not conserved.

• D.

Neither momentum nor kinetic energy is conserved.

• 8.
Two playground balls collide in an inelastic collision. Which of the following is true?
• A.

Both momentum and kinetic energy are conserved.

• B.

Momentum is conserved, but kinetic energy is not conserved.

• C.

Kinetic energy is conserved, but momentum is not conserved.

• D.

Neither momentum nor kinetic energy is conserved.

• 9.
In an inelastic collision between two objects with unequal masses,
• A.

The total momentum of the system will increase.

• B.

The total momentum of the system will decrease.

• C.

The kinetic energy of one object will increase by the amount that the kinetic energy of the other object decreases.

• D.

The momentum of one object will increase by the amount that the momentum of the other object decreases.

• 10.
A billiard ball collides with a stationary identical billiard ball in an elastic head-on collision. After the collision, which of the following is true of the first ball?
• A.

It maintains its initial velocity.

• B.

It has one-half its initial velocity.

• C.

It comes to rest.

• D.

It moves in the opposite direction.

• 11.
A ship with a mass of 4.50 x 107 kg and a velocity of 2.30 m/s to the north collides with another ship whose mass is 2.30 x 107 kg. If the speed of the second ship is 3.40 m/s to the south, what is the change in the kinetic energy after the two ships undergo a perfectly inelastic collision?
• A.

0.38 m/s

• B.

4.91 x 10^6 J

• C.

-2.47 x 10^8 J

• D.

2.52 x 10^8 J

• 12.
A ball of clay with a mass of 55 g and a speed of 1.5 m/s collides with a 55 g ball of clay that is at rest. What is the kinetic energy after the inelastic collision?
• A.

0.03 J

• B.

-0.03 J

• C.

0.06 J

• D.

0.75 m/s

• 13.
The hog-nosed bat is the smallest mammal on Earth: it is about the same size as a bumblebee and has an average mass of 2.0 g. Suppose a hog-nosed bat with this mass flies at 2.0 m/s when it detects a bug with a mass of 0.20 g flying directly toward it at 8.0 m/s. What is the velocity of the bug and the bat after the collision?
• A.

.004 m/s

• B.

0.0024 m/s

• C.

2.55 m/s

• D.

1.09 m/s

• 14.
The cheapest car ever commercially produced was the , which sold in 1922 in the United States for about \$250. The car’s mass was only 111 kg. Suppose two of these cars are used in a stunt crash for an action film. If one car’s initial velocity is 9.00 m/s to the right and the other car’s velocity is 5.00 m/s to the left, what is the velocity of the cars after the collision?
• A.

7 m/s

• B.

4 m/s

• C.

2 m/s

• D.

14 m/s

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