# physics.

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During a baseball game, a batter hits a pop-up to a fielder 94 m away.

The acceleration of grvity is 9.8 m/s^2. If the ball remains in the air for 5.5 seconds, how high does it rise? Answer in units of m.

• physics. -

A projectile staying in the air for t seconds spends half the time going up and half going down.
Since it is a deceleration, we can think of it a being dropped from the highest point and stayed in the air for 2.5 seconds.
S=ut+(1/2)gt²
=0+(1/2)g*2.5²

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