Question

Calculate the force (in N) needed to bring a 800 kg car to rest from a speed of 85.0 km/h in a distance of 105 m (a fairly typical distance for a non-panic stop).

Answer 1

To bring a car to rest, we can use the equation: Force = (mass * final velocity^2) / (2 * distance). The force needed is approximately 24329.5 Newtons.

Step-by-step explanation:

To calculate the force needed to bring the car to rest, we can use the equation:

Force = (mass * final velocity^2) / (2 * distance)

Plugging in the values, we get:

Force = (800 kg * (0 m/s - 85.0 km/h)^2) / (2 * 105 m)

Force ≈ 24329.5 N

Therefore, the force needed to bring the car to rest is approximately 24329.5 Newtons.