Unit 5-Momentum and Impulse

Compared to a sports car moving at 30 km per hour, the same sports car moving at 60 km per hour has:

• four times as much momentum

• the same momentum

• twice as much momentum

• half as much momentum

Tags

NGSS.HS-PS2-2

A ball moving at 30 m/s has a momentum of 15 kg*m/s. The mass of the ball is ________.

• 0.5 kg

• 2.0 kg

• 15 kg

• 45 kg

Tags

NGSS.MS-PS2-2

Consider two particles, A and B. Particle A has a mass of 9 kg and moves at 17 m/s. Particle B has a mass of 10 kg and moves at 15 m/s. Which particle has more momentum?

• Particle A

• Particle B

• The both have the same momentum

• They both have a momentum of zero

Tags

NGSS.HS-PS2-2

The impulse is the product of the __________.

• net force and the time interval over which it acts

• time and velocity of a moving object

• net force and the distance the object travels

• angular momentum and torque

Tags

NGSS.HS-PS2-2

A golf club applies a 78 N force to a .05 kg golf ball for .15 s. Calculate the impulse.

• 11.7 N.s

• 520 N.s

• .002 N.s

• 28.7 N.s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Jim strikes a 0.058 kg golf ball from rest with a force of 291 N and gives it a velocity of 64.0 m/s. How long was the club in contact with the ball?

• 0.013 s

• 0.017 s

• 0.11 s

• 0.26 s

Tags

NGSS.HS-PS2-1

Which of Newton's Three Laws applies when a magician pulls out the tablecloth from under the plates on a table and the plates stay put.

• Momentum

• F = ma

• Action-Reaction Pairs

• Inertia

After a cannon ball is fired into frictionless space, the amount of force needed to keep it going is equal to ____________________.

• one quarter the force with which it was fired.

• twice the force with which it was fired.

• the same amount of force with which it was fired.

• one half the force with which it was fired.

• zero, since no force is necessary to keep it moving.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

The impulse-momentum theorem states that __________.

• the impulse on an object is less than the change in momentum

• the impulse on an object is equal to the change in momentum

• the impulse on an object is greater than the change in momentum

• the force on a moving object is equal to the magnitude of the impulse

Tags

NGSS.HS-PS2-2

True or False: When the time of an impact is extended, the force exerted is decreased.

• true

• false

Tags

NGSS.HS-PS2-3