GCSE Physics Daily Practice (Foundation)
Mark Scheme — 14 marks total
Foundation TierMarking Instructions
- • Accept equivalent answers unless the mark scheme states otherwise.
- • M marks are for method — award even if the final answer is wrong.
- • A marks are for accuracy — only award if the method mark has been earned.
- • B marks are independent and can be awarded without other marks.
- • Where a range of answers is acceptable, this is indicated in the mark scheme.
Energy and Forces
7 marksA car of mass 1000 kg travels at 15 m/s. Calculate its kinetic energy.
Acceptable Answer
KE = ½mv² = ½ × 1000 × 15² = ½ × 1000 × 225 = 112,500 J = 112.5 kJ
A force of 500N acts on an object of mass 50kg. Calculate the acceleration.
Acceptable Answer
F = ma → a = F/m = 500/50 = 10 m/s²
Explain why a parachutist reaches terminal velocity.
Acceptable Answer
When jumping, weight > air resistance so the parachutist accelerates. As speed increases, air resistance increases. Eventually air resistance = weight, resultant force = 0, so acceleration = 0. The parachutist falls at constant speed (terminal velocity).
Waves and Electricity
7 marksPut these electromagnetic waves in order of increasing frequency: visible light, radio waves, X-rays, microwaves.
Acceptable Answer
Radio waves, microwaves, visible light, X-rays
A 6V battery is connected to two 3Ω resistors in series. Calculate the current.
Acceptable Answer
Total R = 3 + 3 = 6Ω. I = V/R = 6/6 = 1A
Explain why the live wire in a plug is dangerous.
Acceptable Answer
The live wire carries alternating current at 230V (high voltage). If touched, current flows through the body to earth, which can cause electrocution. It is dangerous even when an appliance is switched off, as the live wire is always at high voltage.