Question

A ball is thrown straight up into the air with an initial speed of 8.0 m/s. How long does it take for the rocket to reach its highest point?

Answer 1

Correct answer is: t = 0.8 seconds

Step-by-step explanation:

This movement is a vertical shot upwards, the formula is:

V = V₀ - g t , where V₀ is the initial velocity and V is the final velocity

when the ball reaches its highest point the final velocity V is equals to zero

then it is:

V₀ = g t if we get g = 10 m/s²

t = V₀ / g = 8 / 10 = 0.8 seconds

t = 0.8 seconds

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