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AP® Calculus AB-BC

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Physics Application: Helicopter Moving Vertically Drops Ball

APCALC-JXEJW4

A ball is dropped from a helicopter at an altitude of 60 meters.

If the helicopter is moving upward at a speed of 20 m/s, what is the velocity of the ball when it hits the ground?

Assume acceleration due to gravity is $9.8 \text{ m/s}^2$.

A

$-59.591\text{ m/s}$

B

$- 39.699\text{ m/s}$

C

$-39.691\text{ m/s}$

D

$79.698\text{ m/s}$