Momentum and Its Conservation Quiz

A 5 kg object is moving with a velocity of 10 m/s. What is its momentum?

• 50 kg·m/s

• 5 kg·m/s

• 10 kg·m/s

• 100 kg·m/s

Which of the following best describes impulse?

• The change in velocity of an object

• The product of force and time

• The product of mass and velocity

• The change in mass of an object

In an elastic collision, which of the following is conserved?

• Only momentum

• Only kinetic energy

• Both momentum and kinetic energy

• Neither momentum nor kinetic energy

Two objects collide and stick together. What type of collision is this?

• Elastic collision

• Inelastic collision

• Perfectly inelastic collision

• Superelastic collision

A 2 kg ball moving at 3 m/s collides with a 3 kg ball at rest. If the collision is perfectly inelastic, what is the final velocity of the combined mass?

• 1.2 m/s

• 1.8 m/s

• 2.4 m/s

• 3.0 m/s

Which of the following is an application of the conservation of momentum?

• Calculating the speed of a car

• Determining the force of gravity

• Analyzing rocket propulsion

• Measuring temperature changes

A force of 10 N is applied to a 2 kg object for 3 seconds. What is the impulse experienced by the object?

• 20 N·s

• 30 N·s

• 40 N·s

• 50 N·s

In a closed system, the total momentum before a collision is 100 kg·m/s. What is the total momentum after the collision?

• 0 kg·m/s

• 50 kg·m/s

• 100 kg·m/s

• 200 kg·m/s

Which of the following statements is true for inelastic collisions?

• Kinetic energy is conserved

• Momentum is not conserved

• Kinetic energy is not conserved

• Both momentum and kinetic energy are conserved

A 4 kg object moving at 5 m/s collides elastically with a 2 kg object at rest. What is the velocity of the 2 kg object after the collision?

• 5 m/s

• 10 m/s

• 15 m/s

• 20 m/s