Solutions For Admission Assessment Exam Review Chapter H Problem 7PPT

The equation for the weight of the car is

Here, is the acceleration due to gravity and is the mass of the car.

The mass of the car is calculated by substituting and , then

The final speed of the car is zero after the brakes are applied, substitute the initial speed and distance of skid then

The net braking force is . Substitute the values in the above equation

The negative sign indicate retarding force.

Hence, option (B), (C) and (D) are incorrect answers.

The braking force is .

Hence, option is the correct answer.