To find the force of kinetic friction acting on the car, we first need to calculate the net force acting on the car.
The net force can be calculated using the equation:
Net Force = Force applied - Force of friction
First, let's calculate the force of friction using the formula:
Force of friction = coefficient of kinetic friction * Normal force
The normal force can be calculated using the formula:
Normal force = Mass * gravity
Normal force = 1,200 kg * 9.8 m/s^2
Normal force = 11,760 N
Now we can calculate the force of friction:
Force of friction = 0.80 * 11,760 N
Force of friction = 9,408 N
Now we can calculate the net force:
Net Force = 7,000 N - 9,408 N
Net Force = -2,408 N
Since the net force is negative, it means the car is moving in the opposite direction as the applied force. Therefore, the force of friction is the force responsible for the motion of the car.
So, the force of kinetic friction acting on the car as the tires skid across the road is 9,408 N.
In an action movie, a 1,200 kg car is pulled forward by a tow truck with a force of 7,000 N [E]. The hero in the movie hits the brakes in the car to try to get free from the tow truck. The coefficient of kinetic friction between the car’s tires and the road is 0.80.
Find the force of kinetic friction acting on the car as the tires skid across the road.
1 answer