First slide

Projection Under uniform Acceleration

Question

A body is projected up from the top of a tower AB of height 10 m, with a speed of 10 m/s making an angle of  = 30⁰ with horizontal. If g = 10 m/s², the time after which it will strike the ground is

Moderate

A

3 sec
B

1 sec
C

4 sec
D

2 sec

Solution

$- 10 \sin 30^{0} \times t + \frac{1}{2} \times 10 \times t^{2} = 10 S o l v i n g, t = 2 s$

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