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Soumya throws a ball upwards, from a rooftop, 80 m above. It will reach a maximum height and then fall back to the ground. The height of the ball from the ground at time 't' is 'h', which is given by `h=-16t^(2)+64t+80`

How long will the ball take to hit the ground ?

A

4 seconds

B

3 seconds

C

5 seconds

D

6 seconds

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AGRAWAL PUBLICATION-SAMPLE PAPER 7-EXERCISE
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  2. Soumya throws a ball upwards, from a rooftop, 80 m above. It will reac...

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  3. Soumya throws a ball upwards, from a rooftop, 80 m above. It will reac...

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  7. Find the greatest number that divides 45 and 240 completely.

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