Question

A skater increases her speed from 5.0 m/s to 10 m/s in 5 seconds. What is the acceleration of the skater?

Answer 1

Answer:

$1 m/s^2$

Explanation:

The acceleration of an object is the rate of change of velocity of the object; it is given by:

$a=\frac{v-u}{t}$

where

u is the initial velocity of the body

v is its final velocity

t is the time elapsed

In this problem, we have:

u = 5.0 m/s is the initial velocity of the skater

v = 10.0 m/s is the final velocity

t = 5 s is the time elapsed

Therefore, the acceleration of the skater is:

$a=\frac{10-5}{5}=1 m/s^2$