Question

A soccer player is running upfield at 10m/s and comes to a stop in 3 seconds facing the same direction. What is his acceleration

Answer 1

-10/3m/s2. The formula for acceleration is (Final speed - initial speed)/ time.
Thus, (0m/s - 10m/s)/3s is 10m/s/3s which then can be simplified to /10/3m/s2

Answer 2

The acceleration is 3.33 m/s².

Step-by-step explanation:

Given that,

Velocity = 10 m/s

Time t = 3 sec

We need to calculate the acceleration

Using equation of motion

`v=u+at`

Where, v = final velocity

u = initial velocity

t = time

a = acceleration

Put the value into the formula

`10=0+a*3`

`a=(10)/(3)`

`a=3.33\ m/s^2`

Hence, The acceleration is 3.33 m/s².