Momentum

Question 1

Newtons 2nd law

Answer 1

The rate of change in momentum of an object is proportional to the resultant force and in the same direction. F=ma

Question 2

Newtons 3rd law of motion

Answer 2

If object A exerts a force on object B, then B exerts an equal and opposite force on A

Question 3

Give equation for momentum

Answer 3

Mass*velocity

Question 4

Define impulse

Answer 4

Change in momentum

Question 5

Area under f/t graph

Answer 5

Impulse

Question 6

How do you find impulse from a graph

Answer 6

Area under f/t graph

Question 7

Newtons 1st law of motion

Answer 7

An object will continue in a state of rest or of uniform motion in a straight line unless acted upon by a resultant force

Question 8

Define inelastic collision

Answer 8

When the kinetic energy is not conserved; some is converted into heat. Momentum and total energy is always conserved

Question 9

Define a perfect elastic collision

Answer 9

When kinetic energy is conserved. Momentum and total energy is conserved

Question 10

Principle of conservation of energy

Answer 10

In a closed system, in any specified direction, the total momentum before an interaction is equal to the total momentum afterwards

Question 11

What is conserved in all collisions?

Answer 11

Momentum and total energy

Question 12

What is the equation for kinetic energy?

Answer 12

=0.5mv^2

Question 13

What measures are in place to keep passengers safe on a car crash?

Answer 13

Seat belts
Crumple zones
Air bags
Box thingy