# Physics - P2

5.0 / 5 based on 1 rating

- Created by: jessicawilkinson2
- Created on: 20-05-18 13:21

define + give examples of scalars.

figures that are only numbers, eg: distance, speed, weight

1 of 34

define + give examples of vectors.

figures that are numbers and have directions, eg: velocity, acceleration

2 of 34

equation for distance travelled

speed x time

3 of 34

define acceleration.

rate in change of velocity.

4 of 34

equation for acceleration.

change in velocity / time taken

5 of 34

list equipment for measuring distance and time.

distance: tape measure, ruler, trundle wheel. time: stopwatch, light gates.

6 of 34

what does a flat line on a distance/time graph mean?

object is stationary (still)

7 of 34

what does the gradient on a distance/time graph mean?

speed object has travelled at. steeper = faster

8 of 34

what does the area under a velocity/time graph mean?

distance travelled.

9 of 34

what does a flat line on a velocity/time graph mean?

object is moving at a steady velocity.

10 of 34

what does the gradient on a velocity/time graph mean?

acceleration. steeper = faster acceleration

11 of 34

what is resultant force?

overall force acting on an object.

12 of 34

equation for resultant force

mass x acceleration

13 of 34

if an object has zero resultant force, how is it moving?

it is stationary (still), as forces are balanced, or in equilibrium.

14 of 34

if an object has non-zero resultant force, how is it moving?

it is accelerating/decelerating, as the forces are unbalanced.

15 of 34

what is contact force?

where two objects must be touching, eg: pulling a trolley.

16 of 34

what is non-contact force?

where two objects aren't touching, eg: magnetic forces

17 of 34

what is Newton's first law?

if an object has zero resultant force, there is no change in velocity.

18 of 34

what is Newton's second law?

if an object has non-zero resultant force, it will accelerate/decelerate.

19 of 34

equation for force (1)

mass x acceleration

20 of 34

what is Newton's third law?

reaction forces are opposite and equal.

21 of 34

what if the friction force = driving force?

object will move at steady speed.

22 of 34

what if the friction force < driving force?

object will accelerate.

23 of 34

what if the friction force > driving force?

object will decelerate.

24 of 34

describe the journey of a skydiver. include terminal velocity, air resistance, gravity, weight.

1) skydiver jumps out of plane, weight > resistance 2) air rest. inc, weight = resistance, terminal velocity 3) parachute pulled, resi. < weight 4) as velocity and rest. decrease, weight = resistance

25 of 34

equation for momentum.

mass x velocity

26 of 34

equation for force (2)

change in momentum/time

27 of 34

what is an elastic collision?

where the object returns to normal after forces are removed, eg: elastic band

28 of 34

what is a plastic collision?

where the object does not return to normal after forces are removed, eg: plasticine.

29 of 34

equation for kinetic energy.

0.5 x mass x speed ^ 2

30 of 34

equation for work done.

force x distance

31 of 34

equation for power

work done / time

32 of 34

equation for force by spring.

extension x spring constant

33 of 34

equation for energy transferred in stretching.

0.5 x spring constant x extension ^ 2

34 of 34

## Other cards in this set

### Card 2

#### Front

define + give examples of vectors.

#### Back

figures that are numbers and have directions, eg: velocity, acceleration

### Card 3

#### Front

equation for distance travelled

#### Back

### Card 4

#### Front

define acceleration.

#### Back

### Card 5

#### Front

equation for acceleration.

#### Back

## Similar Physics resources:

0.0 / 5

1.0 / 5 based on 2 ratings

1.0 / 5 based on 2 ratings

0.0 / 5

1.0 / 5 based on 2 ratings

1.0 / 5 based on 8 ratings

1.0 / 5 based on 1 rating

0.0 / 5

1.5 / 5 based on 8 ratings

1.0 / 5 based on 2 ratings

## Comments

No comments have yet been made