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nata0808 [166]
3 years ago
9

A brick falls from a wall to the ground 3.42 m below. How much time will it take to

Physics
1 answer:
ddd [48]3 years ago
6 0

Answer:

The time taken by the brick to hit the ground, t = 0.84 s

Explanation:

Given that,

A brick falls from a height, h = 3.42 m

The initial velocity of the brick is zero.

Since the brick is under free-falling. The time equation of a free-falling body when the displacement is given is

                                     t = \sqrt{2h/g}

where,

                                 h - height from surface in meters

                                 g - acceleration due to gravity

on substituting the values in the above equation,

                                 t =  \sqrt{2X3.14/9.8}

                                   = 0.84 s

Hence, time taken by the brick to hit the ground is t = 0.84 s

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7 0
3 years ago
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Answer:

The angular velocity is  w = 1.43\  rad/sec

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     6w = 4.2

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