Question

a car can accelerate from rest to 70 km/s in 7 seconds. what is the cars average acceleration. show your work

Answer 1

10km/s²

Step-by-step explanation:

Given parameters:

Initial velocity = 0km/s

Final velocity = 70km/s

Time = 7s

Unknown:

Acceleration =?

Solution:

Acceleration is the rate of change of velocity with time.

It is mathematically expressed as;

A =
`(v - u)/(t)`

v is the final velocity

u is the initial velocity

t is the time

A =
`(70 - 0)/(7)` = 10km/s²