Understanding Momentum in Physics

What is the definition of momentum in physics?

• The rate of change of velocity

• The product of an object's mass and velocity

• The force applied to an object

• The energy stored in an object

Which of the following is the formula for calculating linear momentum?

If a car has a mass of 1000 kg and is moving at a velocity of 20 m/s, what is its momentum?

• 2000 kg·m/s

• 20,000 kg·m/s

• 200 kg·m/s

• 10,000 kg·m/s

Which factor does NOT affect the momentum of an object?

• Mass of the object

• Velocity of the object

• Shape of the object

• Direction of motion

A 5 kg ball is rolling at 3 m/s. Calculate its momentum.

• 15 kg·m/s

• 8 kg·m/s

• 5 kg·m/s

• 3 kg·m/s

How does increasing the velocity of an object affect its momentum?

• It decreases the momentum

• It has no effect on the momentum

• It increases the momentum

• It doubles the momentum

A truck and a car are moving at the same velocity. Which has more momentum and why?

• The car, because it is smaller

• The truck, because it has more mass

• They have the same momentum because they have the same velocity

• The car, because it is faster

If the momentum of an object is zero, what can be inferred about its motion?

• The object is moving at a constant speed

• The object is at rest

• The object is accelerating

• The object is moving in a circular path

Which of the following scenarios demonstrates the conservation of momentum?

• A ball rolling down a hill speeds up

• Two ice skaters push off each other and move in opposite directions

• A car comes to a stop at a red light

• A rocket accelerates upwards

What happens to the momentum of an object if its mass is doubled while its velocity remains constant?

• The momentum is halved

• The momentum remains the same

• The momentum is doubled

• The momentum is quadrupled