You were driving a car with velocity m/s. You quickly turned and braked, and your velocity became m/s. The mass of the car was 1200 kg. What was the (vector) change in momentum Delta during this maneuver? Pay attention to signs. Delta = kg·m/s What was the (vector) impulse applied to the car by the ground? (vector) impulse: N·s If the maneuver took 7 seconds, what was the the average (vector) force exerted on the car? (The net force is due to the ground and the Earth; the y components of these forces cancel.) net = N
Explanation / Answer
a) p = 1200* = b) impulse = change in momentum = c) avg force = =