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3 years ago

7

a ball dropped from rest falls freely intil it hits the ground with the speed of 20 m/s . the tine furing which the ball is in f

ree fall is approximately

1 answer:

forsale [732]3 years ago

4 0

Answer:

5m/s

Explanation:

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Hooke's Law states that the extension is directly proportional to the force applied so:
F/x = constant

F₁/x₁ = F₂/x₂
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You measure the velocity of a drag racer that accelerates with constant acceleration. You want to plot the data and determine th

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Answer:

a) Linear equation

Explanation:

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3 years ago

A heavy ball with a weight of 150 N is hung from the ceiling of a lecture hall on a 4.1-m-long rope. The ball is pulled to one s

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Answer:

The tension in the rope is 262.88 N

Explanation:

Given:

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Initial speed of ball $v = 5.5 \frac{m}{s}$

For finding the tension in the rope,

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$mg = 150$ ( $g = 9.8 \frac{m}{s^{2} }$ )

$m = \frac{150}{9.8}$

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Tension in the rope is,

$T = mg + \frac{mv^{2} }{r}$

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3 years ago

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