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As a shot put competitor, Sam throws an 8 kg ball straight upwards, giving it a constant upward acceleration of 35 m/s2 over 70.0 cm.

As a shot put competitor, Sam throws an 8 kg ball straight upwards, giving it a constant upward acceleration of 35 m/s2 over 70.0 cm. He releases the ball and it leaves his hands 2.20 m above the ground. (Note: Ignore air resistance. Let y = 0 at ground level.) (a) Whatisthespeedoftheballwhenitisjustreleased? (b) Whatistheaccelerationoftheballafteritisreleased? (c) Howhighabovethegrounddoestheballgo? (d) HowmuchtimedoesSamhavetogetoutofthewayoftheball(afteritsrelease)beforeitreturnstothe height of the top of his head which is 1.70 m above the ground? (e) Whatisthespeedoftheballjustasithitstheground? Make a sketch of the four steps described by the questions - release, maximum height, time after release to pass by his head, and speed hitting the ground. For each of these steps, write a couple sentences describing what you know, what you need to find, and your choice the constant acceleration equation

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a To find the speed of the ball when it is just released we can use the equation of motion for an object undergoing constant acceleration vf vi at Whe... blur-text-image

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