# AQA additional science physics revision notes

AQA additional science physics revision notes. i hope this helps and check out my other revision notes for biology and chemistry. XD

- Created by: natasha
- Created on: 16-05-12 17:50

First 230 words of the document:

P7 NUCLEAR PHYSICS PHYSICS:

Distance-time graphs

the speed was CONSTANT

The car went 10 metres every second ( = 50 metres

5 seconds)

The steeper the slope, the faster it travelled

THE SLOPE ON A DISTANCE-TIME GRAPH

REPRESNENTS ITS SPEED.

Distance travelled (metre, m)

Speed (metres/second, m/s) = ---------------------------------------------

Time taken (seconds, s)

When comparing on a distance-time graph, the line with the highest end distance travelled

the furthest.

If a line is underneath the highest one, then it travelled slower

If the line is vertical, then it means it stopped and its speed was zero for some time

Summary Questions

Key Points

Q1. A) The unit of speed is the metre/second

1. The steeper the line on a B) An object moving at steady speed travels the -

distance-time graph, the - same distance every second.

greater the speed it C) The steeper the line on a distance-time graph of

represents - a moving object, the greater its speed is.

2. 2. Speed (m/s) =

----distance travelled (m) ------ Q2. A vehicle moves on a motorway travels 1800 m in

---------------------------------------- 60 seconds. Calculate:

---- -----time taken (s) a) The speed of the vehicle in m/s

b) How far it would travel at this speed in 300

seconds

## Comments