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Hitman42 [59]
2 years ago
6

A runner is at rest at the starting line of a race. She accelerates at 3.3m/s/s. What is her position after 7.5s? Round your ans

wer to the nearest tenth of a meter.
Physics
1 answer:
natulia [17]2 years ago
3 0

Answer:

sorry ‍♂️I don't know the answer

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A tennis ball was thrown straight up with initial velocity of 22.5 m/s. How high does the ball rise
kiruha [24]

Answer:

h_m=25.8\ m

Explanation:

<u>Vertical Launch Upwards</u>

In a vertical launch upwards, an object is launched vertically up without taking into consideration friction with the air.

If vo is the initial speed and g is the acceleration of gravity, the maximum height reached by the object is given by:

\displaystyle h_m=\frac{v_o^2}{2g}

The tennis ball was thrown straight up with a speed of v0=22.5 m/s. The acceleration of gravity is g=9.81\ m/s^2, thus:

\displaystyle h_m=\frac{22.5^2}{2\cdot 9.81}

\mathbf{h_m=25.8\ m}

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