Question

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

of the object

Answer 1

20.4m/s²

Step-by-step 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 +
`(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) +
`(1)/(2)` x a x 5.2

53 = 2.6a

a =
`(53)/(2.6)` = 20.4m/s²