Momentum and Collisions Quiz

What word can best describe the total momentum in an isolated system?

• A. conserved

• B. 10, 020 kgm/s

• C. 20000 kgm/s

• D. 99 980 kgm/s

What type of quantity are momentum and velocity?

• A. director

• B. reactor

• C. scalar

• D. vector

The total momentum of two objects before collision is 50 kg. m/s. What will be their total momentum after collision?

• A. 0.50 kg m/s

• B. 1.0 kg m/s

• C. -1.0 kgm/s

Which of the following statements describes momentum?

• A. It is the product of body's mass and velocity.

• B. It is the product of body's mass and acceleration.

• C. It is the sum of body's mass and velocity.

• D. It is the sum of body's mass and acceleration

What is the unit for momentum?

• A. kg m/s

• B. N.kg

• C. kg m/s2

• D. N.m/s.

What is the momentum of the two cars after collision if its momentum before collision is 50 kgm/s?

• A. 5 kgm/s

• B. 15 kgm/s

• C. 30 kgm/s

• D. 50 kgm/s

Two billiard balls approach each other at equal speed. If they collide in a perfectly elastic collision, what would be their velocities after collision?

• A. zero

• B. same in magnitude and direction

• C. same in magnitude but opposite in direction

• D. different in magnitude and opposite in direction

Two marbles with a total mass of 20 kg has an initial momentum of 100 kg m/s. If the marbles stick together after the collision, what is the final velocity of the marbles?

• A. 5 m/s

• B. 80 m/s

• C. 120 m/s

• D. 2, 000 m/s