A Projectile Is Fired from the Edge of a Cliff

Multiple Choice

A projectile is fired from the edge of a cliff as shown in the figure.The initial velocity components are 940 m/s (horizontal) and 96 m/s (vertical) .The projectile reaches maximum height at point P and then falls and strikes the ground at point Q.How high is point P above point Q,assuming no air effects?

A) 470 m
B) 490 m
C) 45,000 m
D) 940 m
E) 90,000 m