Question

A car has a mass of 1.00 × 103 kilograms, and it has an acceleration of 4.5 meters/second2. What is the net force on the car?

Answer 1

ANSWER

C. $F=4.5 \times10^3$. newtons

EXPLANATION

According to Newton's second law,

$F_{net}=ma$, where

$m=1.00\times 10^3kg$ is the mass measured in kilograms.

and

$a=4.5ms^{2}$ is the acceleration in metres per second square.

We substitute these values to obtain,

$F=1.00\times10^3 \times 4.5$.

We rearrange to get,

$F=1.00\times4.5 \times10^3$.

We multiply out the first two numbers and leave our answer in standard form to get,

$F=4.5 \times10^3 N$.

The correct answer is C