Tarzan, mass 85 kg, swings down on the end of a 28 m vine from a tree limb 4.4 m above the ground. How fast is Tarzan moving when he reaches the ground?

Answer 1

Use energy conservation.

M g H = (1/2) M V^2

V = sqrt (2gH)

H is the vertical distance that he falls, 4.4 m.

g = 9.8 m/s^2

His mass will not matter. It cancels out.

Answer 2

a car increases its speed from 50km/hr to 75km/hr in 15mintues. what is the acceleration of the car