Acar 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? a. 0.9 × 103 newtons b. 2.5 × 103 newtons c. 4.5 × 103 newtons d. 9.0 × 103 newtons e. 9.6 × 103 newtons

ANSWER

C. . newtons

EXPLANATION

According to Newton's second law,

, where

is the mass measured in kilograms.

and

is the acceleration in metres per second square.

We substitute these values to obtain,

.

We rearrange to get,

.

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

.

The correct answer is C

pe = weightxheight = 2000x1000=2,000,000joules