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finlep [7]
3 years ago
14

A stone is thrown from a cliff and lands in the sea. Air resistance is negligible. Which statement is correct whilst the stone i

s in motion?
vertical component of stone's displacement is constant
horiz. comp. of stone's displacement is constant
vertical component of stone's velocity is constant
horiz. comp. of stone's veolcity is constant
Physics
1 answer:
erik [133]3 years ago
4 0
Since the stone is travelling, the displacement cannot be constant. This leaves the last 2 choices as possibilities. Now consider the acceleration that can act on the stone. Acceleration due to gravity is the only one. That means the horizontal component of the stone has to be constant since there is no acceleration in the horizontal direction.
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Answer:

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Explanation:

Given that a spherical balloon is being inflated and the radius of the balloon is increasing at a rate of 2 cm/s

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Since the rate = 2 cm/s that is,

Rate = radius/ time

Therefore,

2 = r/t

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(B) If V is the volume of the balloon as a function of the radius, find V or and interpret it.

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