# Physics AQA Unit 2 Quiz: Work, energy and momentum

This is my third Unit 2 quiz, covering energy, work, momentum, collisions and explosions.

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What is the unit of work?
J
1 of 10
What is the equation to calculate work?
force applied x distance moved in the direction of the force
2 of 10
What work is done on an object if a force of 400N moves it a distance of 5m?
2000J
3 of 10
What is the equation to calculate kinetic energy?
1/2 x mass x speed squared
4 of 10
A jogger of mass 60kg runs at 3m/s. What is the kinetic energy of the jogger?
270J
5 of 10
The units of momentum are kgm/s or Ns, but what is the equation?
mass x velocity
6 of 10
A trolley of mass 0.2kg moving at 1.5m/s to the right collides with a staionary trolley of mass 0.3kg. After the collision they move off together. Calculate the velocity of the trolleys after the collision.
0.6m/s
7 of 10
What is the conservation of momentum?
Whenever objects interact, the total momentum before the interaction is the same as the total momentum afterwards, providing no external forces act
8 of 10
A force of 2000N is needed to bring a car to rest in 8s. What is the initial momentum of the car?
16000kgm/s
9 of 10
What is the mass of a car that has 4000J of kinetic energy when moving at 10m/s?
400N
10 of 10

## Other cards in this set

### Card 2

#### Front

What is the equation to calculate work?

#### Back

force applied x distance moved in the direction of the force

### Card 3

#### Front

What work is done on an object if a force of 400N moves it a distance of 5m?

#### Back ### Card 4

#### Front

What is the equation to calculate kinetic energy?

#### Back ### Card 5

#### Front

A jogger of mass 60kg runs at 3m/s. What is the kinetic energy of the jogger?

#### Back 