+0

# Science

0
63
1
+33

A unique type of basketball is played on planet Zarth. During the game, a player flies above the basket and drops the ball in from a height of 8.5m. If the ball takes 5s to fall, find the value of gravity on Zarth.

KingChris  Dec 20, 2017
Sort:

#1
+80910
+1

We can use this equation

h  = vi * t   +  (1/2) * a * t^2

Where

h = height  =  8.5 m

vi  =  initial velocity  = 0

a  = acceleration  due to gravity

t  = time  =  5s

8.5 m  =  0 * 5s    +  (1/2) * a  * (5 s)^2

8.5  =  12.5  a

8.5 m / 12.5 s^2    =   .68 m/s^2 =  acceleration due to gravity

This  will  be  a negative quantity since it is directed downward

So..... this is      -.68  / -9.81    ≈  .069  that of Earth  ≈  6.9%  of that on Earth

CPhill  Dec 20, 2017
edited by CPhill  Dec 20, 2017

### 28 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details