Question

When driving or riding in vehicles, we rely on the friction that exists between the road and the tires. Calculate the force of kinetic friction for a vehicle of mass 7500 kg. Calculate the stopping distance in meters when the car is skidding if the original speed is 60 km/hr.

Answer 1

To calculate the force of kinetic friction for a car and the stopping distance when skidding, use the formulas for force of kinetic friction and stopping distance.

Step-by-step explanation:

When calculating the force of kinetic friction, we can use the formula:

force of kinetic friction = coefficient of friction × normal force

The normal force can be calculated by multiplying the mass of the car (7500 kg) by the acceleration due to gravity (9.8 m/s^2).

Once we have the force of kinetic friction, we can use the formula:

stopping distance = initial velocity^2 / (2 × acceleration)

To convert the initial velocity from km/hr to m/s, we divide it by 3.6.

Substituting the values into the formula, we can find the stopping distance in meters.