Ch3 - Projectile Motion Examples
A ditch 2.5 m wide crosses a trail bike path. An upward incline
of 15° has been built on the approach so that the top of the
incline is level with the top of the ditch. What is the minimum
speed a trail bike must be moving to clear the ditch? Add 1.4 m
to the range for the back of the bike to clear the ditch safely.
February 27, 2015
A ball rolls down a roof that makes an angle of 30° to the horizontal. It
rolls off the edge with a speed of 5.00 m/s. The distance to the ground
from that point is two stories or 7.00 m.
a) How long is the ball in the air?
b) How far from the base of the house does it land?
c) What is its speed just before landing?
William Tell is shooting an apple that hangs on a tree. The apple is a
horizontal distance of 20.0 m away and at a height of 4.00 m above the
ground. If the arrow is released from a height of 1.00 m above the
ground and hits the apple 0.500 s later, what is the arrow's initial
velocity?
Ch3 - Projectile Motion Examples
February 27, 2015