Physics - Forces - Set 1

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1. A ship wants to sail to another country. What needs to happen for it to do that?

  • There shouldn't be any upthrust or gravity.
  • There needs to be unbalanced forces, or the ship won't work properly.
  • There needs to be more gravity than upthrust, or the ship won't move properly.
  • Upthrust and gravity need to be balanced.
  • There needs to be more upthrust than gravity, or the ship will sink.
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Other questions in this quiz

2. Which liquid has more upthrust?

  • Cooking oil
  • Washing-up liquid
  • Orange juice
  • Wallpaper paste
  • Water

3. Someone travels 70km in 2 hours. What's the speed (km/h)?

  • 140
  • 35
  • 0.6
  • 3.1
  • 1.7

4. Someone puts a brick in a liquid. They use a Newton Meter to measure things. Upthrust makes the brick (and any other object)...

  • Appear to weigh less, but it doesn't really. It's weight stays the same.
  • Create unbalanced forces, so the brick (and any other object) sinks.
  • Weigh less. Upthrust changes the weight.
  • Balance with the forces around it.
  • Float up to the surface of the liquid.

5. An elastic bungee rope is 300m at the start of a jump. It extends by 30m at the middle of a jump. How long is it now?

  • 270m
  • 300m
  • 330m
  • 30m
  • 660m

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