Motion along a straight lineAQA A-Level Physics: Mind map

Exam questions on Motion along a straight line

1. A cyclist starts from rest and accelerates uniformly at 1.2 m s⁻² along a straight, level road for 10 s.
   The cyclist then brakes uniformly and stops in 4.0 s. Calculate the distance travelled while braking.2 marks
2. A small ball is released from rest above a hard floor and falls freely, hitting the floor 0.60 s later. It rebounds vertically with a speed of 4.4 m s⁻¹. Ignore air resistance and take g = 9.81 m s⁻².
   Calculate the maximum height reached by the ball after the first bounce.2 marks
3. A student determines the acceleration of free fall, g, by dropping a steel ball from rest from different heights h above a trapdoor. An electromagnet holds the ball and an electronic timer starts when the ball is released and stops when the ball hits the trapdoor. She measures the fall time t for each height and plots a graph of t² against h.
   Explain why this graph should be a straight line through the origin, and state what its gradient equals.3 marks