Starter quiz

  • Which force causes objects to fall to the ground?
    • friction
    • electromagnetic
    • gravitational  ✓
    • tension
  • Why is a force represented by an arrow on a diagram? Choose the best answer.
    Why is a force represented by an arrow on a diagram? Choose the best answer.
    • Forces have magnitude (size).
    • Forces have direction.
    • Forces have both magnitude (size) and direction.  ✓
    • The colour of the arrow indicates the type of force.
  • Which force opposes movement through liquids?
    • gravitational
    • tension
    • drag  ✓
    • magnetic
    • reaction
  • At the end of a race a car opens a parachute. Why do they do this?
    At the end of a race a car opens a parachute. Why do they do this?
    • The drag force increases and this slows the car down.  ✓
    • The drag force decreases and this slows the car down.
    • The driving force increases and this slows the car down.
    • The driving force decreases and this slows the car down.
  • A car moving along a flat road has an unbalanced forwards force acting on it for 30 s. What will happen to the car's movement?
    A car moving along a flat road has an unbalanced forwards force acting on it for 30 s. What will happen to the car's movement?
    • The car will stay at the same speed for the 30 s.
    • The car will quickly speed up and then move at a steady speed for 30 s.
    • The car will slow down.
    • The car will continue to speed up throughout the 30 s.  ✓
    • The car will speed up and slow down throughout the 30 s.
  • An emergency food parcel is dropped from a plane. Near the ground the parachute opens. What happens to the movement of the food parcel?
    An emergency food parcel is dropped from a plane. Near the ground the parachute opens. What happens to the movement of the food parcel?
    • It starts moving upwards.
    • It immediately changes to a new constant speed.
    • It gradually slows down.  ✓
    • It stops moving immediately.
    • There is no change in the movement.
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