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1. While standing at the edge of a bridge, you throw a ball upward with an...

1. While standing at the edge of a bridge, you throw a ball upward with an initial speed of 12 m/s. The ball subsequently falls to the ground, which is 45 m below the point where the ball leaves your hand. (a) How much time is the ball in the air? (b) What is the velocity of the ball when it hits the ground?

2. An object is fired straight up at a speed of 12m/s. Calculate (a) its maximum altitude and (b) the time it takes to reach that height. Ignore air resistance.

3. A marble rolls across a flat surface. Its initial velocity is 1 m/s but it comes to rest after 10 seconds. Find: (a) The acceleration of the marble. (b)The distance traveled by the marble as it comes to rest.

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