Daily Practice · GCSE Science

Daily Practice - GCSE Science

11th November 1997

5 questions · GCSE · 584 questions in this band

1
Radioactivity, Half-Life and Nuclear Uses
State one source of natural background radiation and one source of artificial (man-made) background radiation.
2
Forces
A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
3
Motion: Speed, Velocity and Acceleration
A ball decelerates uniformly from 18 m/s to 0 m/s over a distance of 2.7 m while being caught. Using (final velocity)^2 = (initial velocity)^2 + 2 x acceleration x distance, calculate its deceleration.
4
Forces, Newton's Laws and Momentum
A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
5
Pressure, Moments and Levers
A spanner is used to loosen a bolt. Explain why using a longer spanner makes it easier to loosen the bolt.

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