A ball was thrown downwards at a velocity of 4m/s from a height of 40m from the ground. a) What will be the balls velocity upon hitting the ground if there is no horizontal velocity. b) What will be the velocity of the ball upon hitting the ground if a wind causes it to have an additional constant horizontal velocity of 2m/s c) What will be the balls velocity upon hitting the ground if it was thrown upwards at 4m/s and there is no wind to cause horizontal velocity

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