Question

For how long a time must a tow truck pull with a force of 550N on a stalled 1200kg car to give it a forward velocity of 2.0m/s?

Answer 1

4.36 seconds

Step-by-step explanation:

According to the question;

• Force is 550 N
• Mass of the car is 1200 kg
• Velocity of the car is 2.0 m/s

We are needed to find the time the car must the tow track pull the car.

• From Newton's second law of motion;
• Impulsive force, F = Mv÷t , where m is the mass, v is the velocity and t is the time.

Rearranging the formula;

t = mv ÷ F

Thus;

Time = (1200 kg × 2.0 m/s²) ÷ 550 N

= 4.36 seconds

Thus, the time needed to pull the car is 4.36 seconds