First slide

Vertical projection from ground

Question

A ball is thrown vertically upward. [t has a speed of 10 m/sec when it has reached one half of its maximum height. How high does the ball rise ? (take g = 10 m/s²)

Easy

A

5 m
B

15 m
C

10 m
D

20 m

Solution

By using III^rd equation of motion v² = u² + 2as

02 =(10)² + 2(-10) $(\frac{H}{2})$ = H =10m

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