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6. When a rocket is launched into the sky it moves upwards, why?

  • The resultant force is zero
  • The thrust is larger than both the gravity and drag
  • The thrust is larger than only gravity or drag

7. An increase in kinetic energy means..

  • A higher mass
  • Half of the work done
  • The amount of work done (but a little bit less due to wasted energy as heat)
  • Work done multiplied by two

8. Which one involves direction?

  • Velocity
  • Speed

9. When are the forces unbalanced?

  • When there is no resultant force
  • When the object is acceleration/speed increases
  • When the object travels at a constant speed

10. What is kinetic energy?

  • Movement energy
  • Height energy
  • Energy transferred

11. What does an object resting on a surface experience?

  • A reaction force
  • Movement force

12. What does the gradient on a distance-time graph represent?

  • Time
  • Speed
  • Distance

13. When objects fall what happens?

  • KE gained and GPE lost
  • GPE gained and KE lost
  • It smashes to pieces if it's not shatterproof

14. Can displacement be both positive and negative?

  • Yes
  • No

15. When/how is GPE increased?

  • By lowering the height
  • By doing work
  • By moving the object

16. What is it called when an objects speed increases?

  • Speed
  • Accellaration
  • Velocity

17. What do the arrows show on a diagram of an object?

  • The speed of the object
  • The type of friction
  • The size/direction of forces
  • The length of the object

18. When are forces balanced?

  • When the resultant force changes
  • When a car drives at a steady speed and the reaction of a surface
  • When an object is speeding up
  • When a rocket is going up into space

19. When the momentum is constant it means..

  • Either the mass or velocity is constant
  • Both the mass and velocity are constant
  • The resultant force is not zero

20. Acceleration is..

  • Distance travelled
  • How quickly you're speeding up/change in velocity
  • Speed/velocity