Suppose a 60.0 kg person was in a vehicle that was traveling at 26.1 m/s ( about 60 mph) at the moment it hit a concrete wall. The velocity a person equals that of the car both before and after the crash, and the velocity changes in 0.20 Sketch the problem a) What is the person's momentum in the traveling car. b)What the person's momentum in the car after it hits the concrete wall? c) What is the average force exerted on the person

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?