Question: i only want the answer for question 5b. 3- 5. A ball is thrown upwards from the top of building. Its vertical distance, h metres,

i only want the answer for question 5b.

3- 5. A ball is thrown upwards from the top of building. Its vertical distance, h metres, from the ground after time t seconds, is given by h = 50 + 10t - 5t. C (a) Find the height of the building. (b) When is the ball at the same level as the top

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