The velocity of a car changes from 10 m/s east to 30 m/s east in 4 seconds what is the acceleration of the car

a = 5 m/s²

Explanation:

Acceleration is the rate of change of velocity. Acceleration can only occur if their is change in the velocity of an object. Acceleration is said to be the change of velocity with time. Acceleration can be represented mathematically as

a = Δvelocity/Δt = change in velocity/ change in time

From the equation acceleration means the difference between initial velocity and final velocity divided by the time required to change velocity.

let

a = acceleration

u = initial velocity

v = final velocity

t = time

therefore,

a = v - u/t

From the question

u = 10 m/s

v = 30 m/s

t = 4 secs

a = 30 - 10 / 4

a = 20/4

a = 5 m/s²