# GCSE Physics

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1. Speed and velocity are both a measure of
how fast you are going
2. speedAll speed and velocity are both measured in
m/s
3. speed is
How fast you are going with regard to direction
4. Velocity however
Is a measure of how fast you are you going , however it must also have the direction specified
5. Label the graph frbot left to right on the top and then left to right on the bottom • Stopped
• decelerating
• accelerating
• steady speed (in other direction)
6. speed =
• Distance
• -----------
• time
7. On a distance time graph what does the gradient show us
How fast the object is travelling . This is because the gradient is the change in distance (vertical axis) divided by the change in time (horizontal axis)
8. on a distance time graph the gradient =
Speed
9. On a distance time graph flat sections are where the object is
Stationary
10. On a distance time graph straight uphill or downhill means
It's travelling at a steady speed
11. On a distance time graph downhill sections means
It's going back to starting points
12. On a distance time graph curves
Represent acceleration or deceleration
13. On a distance time graph a steeping curve means its
Speeding up
14. On a distance time graph a levelling off curve means its
slowing down
15. Acceleration is
• How quickly velocity is changing
• this change in velocity can be a change in speed or change in direction or both
16. what is the formula for acceleration
• Change in velocity
• -----------------------
• time taken

or

• (v - u)
• ----------
•  t
• here v is tye final velocity and u is the initial velocity
17. What are the units of acceleration
• m/s ^2
• acceleartion is the change inn velocity (m/s) per second (s)
18. A skulling cat accelerates from 2m/s to 6m/s in 5.6s find its acceleration
A = (v-u) / t
19. Label the graph from left to right on the top and then left to right on the bottom 