Kinematics Equation

Question

An object, initially traveling at a velocity of 72 m/s, experiences an acceleration of -9.8 m/s^2. How much time will it take it to come to rest?

Answer 1

An object, initially traveling at a velocity of 72 m/s, experiences an acceleration of -9.8 m/s^2. How much time will it take it to come to rest?

t = ? s

V_i = 72 m/s

V_f = 0

a = -9.8 m/s²

t= (V_f-V_i)/a = -72/-9.8 = 7.3s

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