1. P2
1. Motion

2. 1. Whenever two objects interact the forces they exert are...
Equal
Opposite
Equal and opposite
Larger as time increases

3. 2. What is the resultant force?5 15 30
5 N
15 N
10 N

4. 3. The car is stopped at the traffic lights
3. The car is stopped at the traffic lights. What happens when the driving force is greater than the air resistance and friction?
It continues moving
It accelerates
It moves backwards
It stops

5. 4. The car is driving at 40 mph down the road
4. The car is driving at 40 mph down the road. What happens when the driving force is equal to the air resistance and friction?
It continues moving
It accelerates
It moves backwards
It stops

6. 5. Force is calculated from the following equation?
mass x acceleration
current x voltage
energy / time
distance / time

7. 6. What does the gradient of a d-t graph give?
Speed
Force
Energy
Acceleration

8. 7. What is the speed of the object between 12 and 16 seconds?4 8 12

9. 8. What is the difference between speed and velocity?
Size
Magnitude
Direction
No difference

10. 9. What is the gradient of a v-t graph?
Speed
Force
Energy
Acceleration

11. 10. What is the acceleration of the object between 12 and 16 seconds?4 8 12

12. 11. What does the area under a v-t graph tell us?
Speed
Distance
Time
Acceleration

13. 12. What does the chart show?
The greater the speed of an object the longer it takes to stop
The greater the braking force , the longer it takes to stop
The speed of an object is unrelated to the braking distance
The longer the thinking time the faster the braking distance

14. 13. What is the braking distance?
The distance travelled after the brakes have been applied
The total time it takes to stop
The speed at which an object is travelling before the brakes are applied
Thinking distance + braking distance

15. 14. What does not affect the drivers reaction time?
Tiredness
Drugs
Alcohol
Ice on the roads

16. 15. What is never an outcome for the kinetic energy of a moving vehicle when braking?
It remains constant
Transferred to heat in the wheel and brakes
Converted into sound
Heats up the road surface

17. 16. What does not affect the braking distance?
Road surface
Weather conditions
Vehicle condition
Alcohol use

18. 17. When a falling objects has no resultant force what happens?
Stops accelerating
Accelerates upwards
Stops moving
Decelerates