HARD
AS and A Level
IMPORTANT
Earn 100

In a race, the lead runner is 60 m ahead of the chaser with 200 m to go and is running at 4 m s-1. The chaser is running at 5 m s-1.

Find the minimum constant acceleration required by the chaser to catch the lead runner.

Important Questions on Velocity and Acceleration

HARD
AS and A Level
IMPORTANT

In a race, the lead runner is 60 m ahead of the chaser with 200 m to go and is running at 4 m s-1. The chaser is running at 5 m s-1.

If the lead runner is actually accelerating at a constant rate of 0.05 m s-2, find the minimum constant acceleration required by the chaser to catch the lead runner.

MEDIUM
AS and A Level
IMPORTANT
A jet aeroplane coming in to land at 100 m s-1 needs 800 m of runway.
Find the deceleration, assumed constant, the aeroplane can produce.
HARD
AS and A Level
IMPORTANT

A jet aeroplane coming in to land at 100 m s-1 needs 800 m of runway.

On an aircraft carrier, the aeroplane has only 150 m to stop. There are hooks on the aeroplane that catch arresting wires to slow it down. If the aeroplane catches the hook 50 m after landing, find the deceleration during the last 100 m.

HARD
AS and A Level
IMPORTANT

The sketch shows a velocity-time graph for a sled going down a slope. Sketch the displacement-time graph, marking the displacements at each change in the motion

Question Image

MEDIUM
AS and A Level
IMPORTANT

The sketch shows a velocity-time graph for rowers in a race. Given that the race is 350 m long and finishes at time 50 s, find the value of v.

Question Image

HARD
AS and A Level
IMPORTANT
A footballer kicks a ball directly towards a wall 10 m away and walks after the ball in the same direction at a constant 2 m s-1. The ball starts at 4 m s-1 but decelerates at a constant rate of 0.5 m s-2. When it hits the wall it rebounds to travel away from the wall at the same speed with which it hit the wall.
Find the time after the initial kick when the ball returns to the footballer.
MEDIUM
AS and A Level
IMPORTANT

A footballer kicks a ball directly towards a wall 10 m away and walks after the ball in the same direction at a constant 2 m s-1. The ball starts at  4 m s-1 but decelerates at a constant rate of 0.5 m s-2. When it hits the wall it rebounds to travel away from the wall at the same speed with which it hit the wall.

What assumptions have been made in your answer?

HARD
AS and A Level
IMPORTANT
An entrant enters a model car into a race. The car accelerates from rest at a constant rate of 2 m s-2 down a slope. When it crosses the finishing line a firework is set off at the end of the course. The sound travels at 340 m s-1. The time between the entrant starting and the firework being heard at the start of the course is 12 s.
Find the length of the course.