1. The height above ground, h, of a ball t seconds after being dropped off a...

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1. The height above ground, h, of a ball t seconds after being dropped off a 60 meter tall building is given by the equation h(t) = -4.9t +60 put put and shown on the graph below. (1) -80 10 50 40 30 () (B) 13.55 5 (a) How high is the ball at t = 2 seconds? (b) How long does it take the ball to hit the ground? (c) When is the ball at a height of 10 meters? (d) When will the height of the ball be greater than 10 meters? (e) Using the graph, estimate the height of the ball at t = 1 second, then use the equation for h(t) above to find the exact value. (f) Using the graph, estimate at what time the ball will be a height of 20 meters, then use the formula for h above to find the exact value. 1. The height above ground, h, of a ball t seconds after being dropped off a 60 meter tall building is given by the equation h(t) = -4.9t +60 put put and shown on the graph below. (1) -80 10 50 40 30 () (B) 13.55 5 (a) How high is the ball at t = 2 seconds? (b) How long does it take the ball to hit the ground? (c) When is the ball at a height of 10 meters? (d) When will the height of the ball be greater than 10 meters? (e) Using the graph, estimate the height of the ball at t = 1 second, then use the equation for h(t) above to find the exact value. (f) Using the graph, estimate at what time the ball will be a height of 20 meters, then use the formula for h above to find the exact value.