# You throw a ball straight up in the air. As soon as the ball leaves your hand it is moving at 15m/s?

You throw a ball straight up in the air. As soon as the ball leaves your hand it is moving at 15m/s

(a) How long does it take for the ball to get to the peak?

(b) how high does the ball go?

(c) How long is the ball in the air?

(d) Find the ball's position and velocity at t=1,t=2,t=3

### 1 Answer

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- JimLv 74 weeks ago
vertex is -b/2a from Quadratic Formula

y(t) = ½gt² + v₀t + y₀, v=at and d=vt are the basic formula you need to know.

Standard gravity 'g' is -9.80665 m/s²

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