Momentum and Impulse Review

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

Tags

CCSS.7.RP.A.3

Which has more momentum: a 1000-kg car stopped at a red light or a 12-kg bike moving at 15 mi/h?

• car

• bike

• they are equal

• cannot determine using the info provided

Tags

NGSS.HS-PS2-2

Which object has more momentum?

• a 100-kg motorcycle going 30 km/h.

• a 12-kg bicycle traveling at 30 km/h.

• a 70-kg runner moving at 30 km/h.

• They all have the same momemtum.

Tags

NGSS.HS-PS2-2

If two shopping carts are traveling at the same speed, but one is full and one is empty, which will have more momentum?

• The empty one

• The full one

• They have the same momentum.

Tags

NGSS.HS-PS2-2

A 20-kg rock is traveling at 4 m/s, which of the following shows the correct calculation of the momentum of the rock?

•  $p=\frac{m}{v}=\frac{20}{4}=5\ kg\cdot\frac{m}{s}$  
  

•  $p=mv=20\cdot4=80\ kg\cdot\frac{m}{s}$  

•  $I=Ft=20\cdot4=80\ N\cdot s$  
  

•  $\Delta p=I=20\ kg\cdot\frac{m}{s}$  
  

Tags

NGSS.HS-PS2-2

During a collision. an object experiences an impulse. The impulse causes and is equal to the _____ of the object

• energy change

• kinetic energy change

• force

• momentum

• momentum change

Tags

NGSS.HS-PS2-2

The difference between a truck hitting a wall vs. the same car traveling at the same speed hitting a hay stack is...

• the impulse on the car hitting the wall is greater

• the change in momentum of the car hitting the wall is greater

• the force on the car hitting the hay stack is greater

• the collision time of the car hitting the hay stack is greater

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Padding in helmets can reduce head injuries by decreasing momentum over a ________time, which results in ________ force.

• shorter; less

• shorter; more

• longer time; less

• longer time; more

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

A 0.2-kg egg lands on a carpeted floor. If its momentum right before impact is 0.8 kg*m/s and the egg doesn't break, how much impulse did the floor apply to it?

• 0.16 N*s

• 0.25 N*s

• 0.8 N*s

• 4 N*s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

A 0.2-kg egg lands on a carpeted floor. If its momentum right before impact is 0.8 kg*m/s and the egg breaks, how much impulse did the floor apply to it?

• 0.16 N*s

• 0.25 N*s

• 0.8 N*s

• 4 N*s

Tags

NGSS.HS-PS2-1