Speed, Acceleration, Graphs, Momentum, Stopping Distances

1. What unit should be used when measuring power? 

2. "Whenever 2 objects interact, the forces between them are equal and opposite". This is
 A). Newton's First Law
 B). Newton's Second law
 C). Newton's Third law
 D). not one of Newton's Laws


3. Newton's 3rd law is all about forces. Which of these is a clear demonstration of this law?
 The recoil of a gun
 An apple falling to the ground
 The force of gravity on all objects
 A comet would travel in a straight line if there was no gravity


4. Which of these speeds might be typical for a bicycle?
 A). 0.6 m/s
 B). 6 m/s
 C). 60 m/s
 D). 600 m/s


This motorbike moves along a road at 25m/s.
Calculate .. 

5. The distance moved in 50s.
 A). 2 m
 B). 0.5 m
 C). 125 m
 D). 1.25 km


6. The time taken to travel 2 kilometres.
 A). 4 s
 B). 80 s
 C). 0.08 s
 D). 40 s


7. Which of these 4 distance (s) time (t) graphs shows a horse moving at constant velocity?


8. Which of these is the correct formula for acceleration ?
 A). change in velocity x time taken
 B). change in velocity / time taken
 C). velocity x time taken
 D). velocity / time taken


9. A train accelerates from 10 m/s to 50 m/s in 20 seconds. The acceleration is:
 A). 2 m/s^{2}
 B). 2.5 m/s^{2}
 C). 800 m/s^{2}
 D). 1000 m/s^{2}


10. To increase the momentum of a toy car, which two quantities must be increased?

1st Quantity 
2nd quantity 
A. 
mass 
velocity 
B. 
weight 
acceleration 
C. 
acceleration 
mass 
D. 
mass 
force 


The velocity  time graph shows the journey of a bus as it moves away from a road junction.
What quantity is shown by..... 

11. The gradient of line A 

12. Line B 

13. The area under the line. 

14. The gradient of line C 

