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6. true or false: mass = weight x gravitational field strength, is the correct relationship between mass weight and gravitational field strength?

  • False
  • True

7. what is the first law of motion?

  • balanced forces means no change in velocity
  • a resultant force means acceleration

8. which other name for friction is used when talking about things moving through the air?

  • resistance
  • terminal velocity
  • resultant force

9. what affects your braking distance?

  • how much friction there is
  • how fast you are travelling
  • all of the above
  • how good the brakes are
  • how heavy you are

10. true or false: drugs do not affect the thinking time of a person

  • False
  • True

11. what is the formula for work done?

  • distance = work done x force
  • work done = force x distance
  • force= work done x distance

12. true or false: the formula for work done only works if the force is moving in the same direction as the movement?

  • True
  • False

13. kinetic energy has what formula?

  • kinetic energy= 1/2 x mass x velocity²
  • kinetic energy = 1/2 velocity x mass²
  • kinetic energy = mass x velocity²

14. what is an example of elastic potential energy?

  • an airplane
  • a spring
  • a peanut

15. an example gravitational potential energy is...

  • a peanut on the floor
  • a peanut held at height
  • a peanut on a table

16. what is the relationship between mass, momentum and velocity?

  • momentum = mass / velocity
  • momentum = mass x velocity
  • mass= momentum x velocity

17. true or false: momentum before (event) = momentum after (event)

  • True
  • False

18. what does friction cause?

  • static
  • electricity
  • energy

19. true or false: positive charges move in static electricity?

  • False
  • True

20. what happens when you increase the voltage in a circuit?

  • the current will increase
  • the current will decrease