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kvasek [131]
3 years ago
15

If a 5.5 kg object experiences 15 N of force for .15 seconds what is the speed change

Physics
1 answer:
Nady [450]3 years ago
8 0

The speed change : Δv = 0.41 m/s

<h3>Further explanation</h3>

Given

mass = 5.5 kg

Force = 15 N

time = 0.15 s

Required

the speed change

Solution

Newton 2nd's law

Impulse and momentum

F = m.a

F = m . Δv/t

F.t = m.Δv

Input the value :

15 N x 0.15 s = 5.5 kg x Δv

Δv = 0.41 m/s

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Explanation:

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And, initial potential gravitational potential energy of the rod is U_{g} = \frac{mgL}{2}.

It is given that,

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            g = 9.8 m/s^{2}

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Initial total energy T = \frac{mgL}{2}

Now, when the rod is in horizontal position then final total energy will be as follows.

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Also,    \omega = \frac{\nu}{L}

where,    \nu = speed of the tip of the rod

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              x' = \sqrt{(0.2)^{2} + (0.1)^{2}} m

Then,  x = x' - x_{o}

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3 years ago
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Mars has two moons. What does the orbital speed of these moons depend on?
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Answer:

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