Question

A ball rolls 12 meters in 4 seconds.What is the average speed of the ball?

1. 3 meters/seconds
2.8 meters/seconds
3.16 meters/seconds
4.48 meters/seconds

Answer 1

Answer:

3 meters/second

Explanation:

Speed is roughly defined as distance travelled over a unit of time. So we can calculate the speed of the ball using the formula:

$s=\dfrac{d}{t}$

where:

s = speed

d = distance

t = time

Given:

d=12 meters

t = 4 seconds

So we plug that in our equation:

$s=\dfrac{d}{t}$

$s=\dfrac{12meters}{4seconds}$

$s=3\dfrac{meters}{second}$