GCSE Physics Forces and Motion Flashcards
6 cards from real GCSE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 GCSE Physics Forces and Motion flashcards as text
A car's stopping distance is made up of which two parts?
Answer: Thinking distance and braking distance
Stopping distance = thinking distance + braking distance.
A 1200 kg car is travelling at 15 m/s. What is its momentum?
Answer: 18 000 kg m/s
Momentum = mass × velocity = 1200 × 15 = 18 000 kg m/s.
According to Newton's first law, what happens to a moving object if the resultant force on it is zero?
Answer: It continues to move at the same speed in the same direction
With zero resultant force, a moving object keeps a constant velocity.
A spring extends by 0.2 m when a force of 8 N is applied. What is the spring constant?
Answer: 40 N/m
F = ke, so k = F ÷ e = 8 ÷ 0.2 = 40 N/m.
What does the area under a velocity-time graph represent?
Answer: Distance travelled
The area under a velocity-time graph equals the distance (displacement) travelled.
A skydiver reaches terminal velocity. Which statement is correct?
Answer: Air resistance is equal to the skydiver's weight, so the resultant force is zero
At terminal velocity the forces balance, so there is no acceleration.