Question

An object accelerates from rest and travels 53 m west in 5.2 s. Determine the acceleration

Answer 1

Answer:

20.4m/s²

Explanation:

Given parameters:

Initial velocity  = 0m/s

Distance  = 53m

Time  = 5.2s

Unknown:

Acceleration  = ?

Solution:

This is a linear motion and we use the right motion equation;

        S = ut  + $\frac{1}{2}$at²

S is the distance

u is the initial velocity

a is the acceleration

t is the time

 Insert the parameters and solve;

       53  = (0x 5.2) +  $\frac{1}{2}$ x a x 5.2

       53  = 2.6a

         a = $\frac{53}{2.6}$  = 20.4m/s²