Vertical Forces & Acceleration Video Lessons

Concept

Problem: A skydiver steps from a helicopter and falls for a few seconds until terminal velocity is reached. Thereafter, until he opens his parachute, his acceleration A) is constant.B) decreases.C) increases.D) is zero.E) none of the above

FREE Expert Solution

We are required to analyze motion with a friction force. The question refers to the period of terminal velocity and before opening a parachute.

We need to interpret the implication of terminal velocity.

Acceleration:

$\overline{){\mathbf{a}}{\mathbf{=}}\frac{\mathbf{∆}\mathbf{v}}{\mathbf{∆}\mathbf{t}}}$

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Problem Details

A skydiver steps from a helicopter and falls for a few seconds until terminal velocity is reached. Thereafter, until he opens his parachute, his acceleration

A) is constant.
B) decreases.
C) increases.
D) is zero.
E) none of the above

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