Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Radioactivity, Half-Life and Nuclear Uses
A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
- 2Forces
A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 3Motion: Speed, Velocity and Acceleration
A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
- 4Forces, Newton's Laws and Momentum
State Newton's First Law of Motion.
- 5Pressure, Moments and Levers
Write down the equation that links moment, force and distance.
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