Kinematic equations #3

Question

A skydiving raccoon jumps off a cliff and falls for 8 seconds before he opens his parachute. What

was his speed just before he opened the parachute?

Answer 1

Given:

v_o = 0 m/s

t = 8 s

a = g = 9.8 m/s²

where,

Initial Velocity v₀

Final Velocity denoted by v

Time interval (denoted by t)

Constant acceleration (denoted by a) and Acceleration due to gravity ((denoted by a)

which is equal in this case

v = v_o + at

v = 78.4 m/s

Hence, the speed just before he opened the parachute is 78.4 m/s.