Aparachutist who weighs 200lbs is falling at 120 miles/hour when his parachute opens. his speed is reduced to 15 miles/hour in a vertical distance of 120ft. what force did the parachute exert on the jumper?

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.