Question

a sprinter completes its 100 metres race in 12 s find its average speed

Answer 1

Answer: average speed 8.3333

Explanation:

100 divide by 12

Answer 2

Concept:

The ratio of distance travelled to the time it took to go it is used to calculate speed. Because it just has a direction and no magnitude, speed is a scalar number.

The entire distance travelled by an object is divided by the time it took to traverse that distance to get its average speed. It's a scalar quantity, which means its magnitude is the sole thing that defines it.

Find:

The average speed.

Solution:

$Average speed = \frac{total \quad distance}{total \quad time} \\\\Average speed =\frac{100}{12}\\\\Average speed =8.33m/s$

Hence, the average speed is $8.33m/s$.

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