Daily Practice

GCSE Science

3rd August 1990

5 questions · GCSE · 584 questions in this band

1
Atomic Structure and the Development of the Model
Why is the atomic model a good example of how scientific models change?
2
Radioactivity, Half-Life and Nuclear Uses
Explain the difference between irradiation and contamination.
3
Forces
A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
4
Motion: Speed, Velocity and Acceleration
A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.
5
Forces, Newton's Laws and Momentum
State Newton's First Law of Motion.

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