a parked car begins rolling down a hill in neutral. the car has a mass of 1200 kg. it is moving at a speed…

a parked car begins rolling down a hill in neutral. the car has a mass of 1200 kg. it is moving at a speed of 10 meters per second after 5 seconds of rolling down the hill. what is the force of the car?

a parked car begins rolling down a hill in neutral. the car has a mass of 1200 kg. it is moving at a speed of 10 meters per second after 5 seconds of rolling down the hill. what is the force of the car?

Answer

Explanation:

Step1: Calculate acceleration

Acceleration $a=\frac{v - u}{t}$, where initial velocity $u = 0$ m/s (parked car), final velocity $v=10$ m/s and time $t = 5$ s. So $a=\frac{10 - 0}{5}=2$ m/s².

Step2: Calculate force

According to Newton's second - law $F=ma$, with mass $m = 1200$ kg and acceleration $a = 2$ m/s². So $F=1200\times2 = 2400$ N.

Answer:

2400