Projectile motionEdexcel International A Level Physics: Mind map

Exam questions on Projectile motion

1. A ball is kicked horizontally at 12 m s⁻¹ from the edge of a flat roof that is 20 m above level ground. Air resistance is negligible and the acceleration of free fall is 9.81 m s⁻².
   Calculate the vertical component of the ball's velocity just before it hits the ground.2 marks
2. A footballer kicks a ball from level ground with an initial speed of 20 m s⁻¹ at 30° above the horizontal. Air resistance is negligible and the acceleration of free fall is 9.81 m s⁻².
   Calculate the time the ball is in the air before it returns to the ground.2 marks
3. A footballer takes a free kick 20 m from the goal line, kicking the ball with an initial speed of 18 m s⁻¹ at 35° above the horizontal. The crossbar of the goal is 2.44 m above the ground. Air resistance is negligible and the acceleration of free fall is 9.81 m s⁻².
   Calculate the horizontal and vertical components of the initial velocity of the ball and the time taken for the ball to travel 20 m horizontally.3 marks