Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.

##
Physics 211, Quiz 4A

**
Question 1:
**

Spaceman Spiff walks on Planet Q.
A hideous slime being drops 8 meters from a tree directly
above Spiff. It reaches him in 3 seconds.

What is the gravitational acceleration on Planet Q?

Answer: We know
displacement (y - yo) = -8 m
initial velocity vo = 0 m/s
time interval t = 3 s
So use the kinematic equation
(y - yo) = vo * t + 0.5 * a * t^2
-8 m = 0 + 0.5 * a * (3 s)^2
Solve for acceleration
-8 m
a = ----------
4.5 s^2
= -1.78 m/s^2

Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.