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Nookie1986 [14]

3 years ago

8

How long would it take for a ball dropped from the top of a 576-foot building to hit the ground? round your answer to two decima

l places?

1 answer:

LUCKY_DIMON [66]3 years ago

4 0

If a ball is if a ball is dropped from a 576ft building it would take about 8 seconds for it to hit the ground.

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A rock hits a window and stops in 0.15 seconds. The net force on the rock is 58N during the collision. What is the magnitude of

nlexa [21]

Answer:

The change in momentum is $\Delta p = 0.7 \ kg\cdot m \cdot s^{-1}$

Explanation:

From the question we are told that

The time taken for the stone to stop is $\Delta t = 0.15 \ seconds$

The net force on the rock is $F = 58 \ N$

The impulse of the rock can be mathematically represented as

$I = F * \Delta t$

Substituting values

$I = 58 * 0.15$

$I = 0.7\ kg * m * s^{-1}$

Now impulse is defined as the rate at which momentum change

Hence the change in momentum $\Delta p$ of the rock is equal to the impulse of the rock

So

$\Delta p = I = 0.7 \ kg\cdot m \cdot s^{-1}$

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437x9
is ur answer. I'm not sure tho hope it helps

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F.r.e.e points :]]]

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Corrosion is the tendency of a metal to revert back to its natural state.

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