PHYS111 Lecture Notes - Projectile Motion
11 Mar 2014
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Always draw a diagram and write down your known variables. A ball is thrown in the air from a height of 1. 5m above the ground and takes. Acceleration due to gravity= -9. 8m/s2 t = 4s. D = vit + 0. 5avectort2 ( d 0. 5a vectort2)/t = vi. Therefore the ball was thrown with an initial velocity of 19. 2m/s upwards. Always look at the x and y components when trying to solve projectile motion questions. These components are independent of one another but are related by time. Assuming air resistance is negligible and that the objects follow a path determined solely by the acceleration due to gravity. A motorcyclist drives off a 30m high cliff with a maximum speed of 55m/s and hopes to land on a raft 200m away from the base of the cliff. Find the vertical time and then use it to find if the motorcyclist has gone.
