DP014 CHAPTER 3 MOMENTUM AND IMPULSE

What is the formula for calculating momentum?

• m=mv

• p=v/m

• p=m/v

• p=vm

If two objects collide and stick together, what will happen to their overall momentum?

• momentum will decrease

• momentum will stay the same

• momentum will increase

• none of the above

The unit(s) for Impulse is/are

• N/s

• N

• N s

• m/s

When the speed of an object is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.

• quadruples

• doubles

• decreases

How much momentum does a 50 kg mass moving at 10 m/s have?

• 5 kg m/s

• 5 N

• 500 kg m/s

• 500 N

Which has more momentum: a car stopping at a red light or a bike moving at 15 km/h?

• The car

• The bike

• Both have equal momentum

• Cannot determine an answer using the information provided

A 10kg toy truck moves at 5 m/s east. It then collides head-on with a 5 kg toy car moving 10 m/s west. What is the total momentum of the system?

• 10 kgm/s

• 30 kgm/s

• 50 kgm/s

• 0 kgm/s

A 4.00 kg ball is traveling at 5.00 m/s and strikes a wall. The 4.00 kg ball bounces off the wall with a velocity of 4.0 m/s. The change in momentum of the ball is

• 8.0 kg m/s.

• 26 kg m/s.

• 36 kg m/s.

• 13 kg m/s.

A 140 gm baseball with a velocity of 25.0 m/s is hit by a baseball bat and leaves at 30.0 m/s in the opposite direction. If the ball was in contact with the bat for 12.0 ms, what is the average force on the ball?

• 750 N

• 550 N

• 366 N

• 642 N

The law of conservation of momentum states that, 

• p before is less than p after
• p before is the same as p after
• p before is more than p after

Tags

NGSS.HS-PS2-2