Momentum and Impulse

When a cannon fires a cannonball, the cannon will recoils backwards because:

• Energy if the cannonball and cannon is conserved

• Momentum of the cannonball and cannon is conserved

• Energy of the cannon is greater than the energy of the cannonball

• Momentum of the cannon is greater than the energy of the cannonball

Tags

NGSS.HS-PS2-2

In an elastic collision, if the momentum is conserved, then which of the following statements is true about kinetic energy?

• Kinetic energy is also conserved

• Kinetic energy is gained

• Kinetic energy is lost

• None of the above

Change in momentum is called:

• Force

• Impulse

• Acceleration

• Torque

Tags

NGSS.HS-PS2-2

Momentum depends upon:

• Force acting on the body

• Mass of the body

• Velocity of the body

• Both mass and velocity of the body

Whenever an object strikes a stationary object of equal mass:

• The two objects cannot stick together

• The collision must be elastic

• Momentum is not necessarily conserved

• None of the above

Tags

NGSS.HS-PS2-2

An inelastic collision is one in which:

• Momentum is not conserved but kinetic energy is conserved

• Total mass is not conserved but momentum is conserved

• Neither kinetic energy nor momentum is conserved

• Momentum is conserved but kinetic energy is not conserved

Tags

NGSS.HS-PS2-2

An elastic collision is one in which:

• Momentum is not conserved but kinetic energy is conserved

• Total mass is not conserved but momentum is conserved

• Kinetic energy and momentum are both conserved

• Momentum is conserved but kinetic energy is not conserved

Tags

NGSS.HS-PS2-2

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

• 6030 kg
• 0.0134 kg
• 74.4 kg
• 80 kg

Tags

NGSS.HS-PS2-2

The purpose of crumple zones and airbags in a car is to

• decrease time of impact.

• increase force of impact.

• increase the time of impact.

• decrease the impulse during impact.

In an isolated system, the net ____ on that system is zero.

• external force

• internal force

• time interval

• displacement

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2