Answer:
v = 44m/s
Explanation:
Using the equation of motion
v = u + at
Because it's under gravity
v = u + gt , where
v = final velocity
u = initial velocity
g = acceleration due to gravity
t = time taken
From the question
v=?
u = 15m/s
g = 9.81m/s²
t = 3s
Therefore v = u + gt
v = 15 + 9.81(3)
v = 15 + 29.43
v = 44.43m/s
Approximating to nearest whole number
v = 44m/s
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