Momentum & Impulse

The momentum of an object is defined as the object's:

• force time the time interval
• mass times its acceleration
• mass times its velocity
• velocity times the time interval

The change in the momentum of an object is equal to:

• the impulse acting on the object
• the change in the object's velocity
• the force acting on the object
• the force on the object times the time interval

Which of the following has the largest momentum?

• A large truck parked in a parking lot
• A dog running down the street
• A pickup truck traveling down the highway
• An old lady crossing the street

A 4-kg ball has a momentum of 20 kg m/s. What is the ball's speed?

• 0.2 m/s
• 5 m/s
• 20 m/s
• 80 m/s

Tags

NGSS.HS-PS2-2

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

• twice as much momentum.

• four times as much momentum.

• the same momentum.

• three times as much momentum

Tags

NGSS.HS-PS2-2

The reason padded dashboards are used in cars is that they

• look nice and feel good.
• decrease the impulse in a collision.
• increase the force of impact in a collision.
• increases the time of impact in a collision

Tags

NGSS.HS-PS2-3

Momentum is a scalar quantity.

• true
• false

The units for Impulse are

• N/s
• N*s
• N
• m/s

A 0.02 kg bug is flying South at 1.5 m/s. What force would stop it in 0.01 second?

• 0.024 N

• 150 N

• 3 N

• 0.75 N

Which is the largest fish in the ocean?

• Goliath Grouper
• Blue Whale
• Whale Shark
• Great White Shark