Question

The velocity of a car changes from 10 m/s east to 30 m/s east in 4 seconds.

Answer 1

Answer:

5m/s²

Explanation:

Given parameters:

Initial velocity  = 10m/s due east

Final velocity  = 30m/s due east

Time = 4s

Unknown:

Acceleration of the car = ?

Solution:

Acceleration is the rate of change of velocity with time.

Mathematically;

 Acceleration  = $\frac{v - u}{t}$  

v is the final velocity

u is the initial velocity

t is the time taken

  Insert the parameters and solve;

  Acceleration  = $\frac{30 - 10}{4}$   = 5m/s²