Momentum

Question 1

What is momentum?

Answer 1

Momentum is the product of Mass and Velocity
-momentum can have both positive and negative values

Question 2

Momentum equation

Answer 2

Momentum= mass x velocity
P=mv

Question 3

The momentum of an object will change when?

Answer 3

1. When the mass changes
2. When the speed changes (acceleration, deceleration)
3. when the direction changes (momentum is a vector)

Question 4

Conservation of Momentum is?

Answer 4

The momentum of any amount of objects before (an interaction) is the same as after.
- this happens/is correct in a closed system
-external forces acting on an object can change this

Question 5

Momentum equation is?

Answer 5

F=△M
_____
△T
Force= change in momentum
_______________________
change in time

Question 6

If a force acting on an object causes it to (a), then it will cause a change in (b)

Answer 6

a- accelerate or decelerate
b- momentum

Question 7

What are safety features on cars?

Answer 7

• Crumple zones: crumple on impact, increasing time taken for car to stop
• Seatbelts: stretch, increase time for wearer to stop
• Airbags: compressing air, increase time to hit dashboard