Question

A 925-kg pickup slows to rest from a speed of 77.5 km/h in a distance of 145 m. Presume the pickup is initially traveling in the positive direction.

Part (a) If the brakes are the only thing making the pickup come to a stop, calculate the force (in newtons, in a component along the direction of motion of the pickup) that the brakes apply on the pickup. Numeric : A numeric value is expected and not an expression. Fb = ________

Part (b) Suppose instead of braking that the pickup hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force, in newtons, exerted on the pickup in this case. Numeric : A numeric value is expected and not an expression. Fc = _____

Part (c) What is the ratio of the force on the pickup from the concrete to the braking force? Numeric : A numeric value is expected and not an expression. Fc/Fb = ______

Answer 1