Question

car accelerates in a straight line . its average acceleration is 12m/s2. calculate the increase in velocity of the car in 4seconds

Answer 1

The increase in velocity of the car in 4 seconds will be 48 m/s

What happened when velocity is constant ?

When velocity is not changing, acceleration will be zero. But when there is increase in velocity, there will be acceleration.

Given that a car accelerates in a straight line . its average acceleration is 12m/s2. The increase in velocity of the car in 4 seconds will be;

The parameters are

• a = 12 m/s²

• t = 4s

Using the formula

a = Δv ÷ t

Substitute all the parameters

12 = Δv ÷ 4

Δv = 12 × 4

Δv = 48 m/s

Therefore, the increase in velocity of the car in 4 seconds will be 48 m/s

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