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Ann [662]
3 years ago
13

MY LAST ONE<,Brainliest for best answer!

Physics
2 answers:
grigory [225]3 years ago
8 0
_Award brainliest if helped!
Mechanical Advantage = Force by Hammer / Force by Nail = 160/40 = 4
Neko [114]3 years ago
4 0
Mechanical Advantage = Force B / Force A
So, 160 / 40 = 4
The mechanical advantage of the hammer is 4
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When an object moves, stops moving, changes speed, or changes direction, how do scientists describe that condition?
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Those are all "acceleration", caused by
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3 years ago
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A 51.0 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. For the first 10.0 m th
shepuryov [24]

Answer:

The final speed of the crate is 12.07 m/s.

Explanation:

For the first 10.0 meters, the only force acting on the crate is 225 N, so we can calculate the acceleration as follows:

F = ma

a = \frac{F}{m} = \frac{225 N}{51.0 kg} = 4.41 m/s^{2}

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v_{f}^{2} = v_{0}^{2} + 2ad_{1}                  

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For the next 10.5 meters we have frictional force:

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a = \frac{F - \mu mg}{m} = \frac{225 N - 0.17*51.0 kg*9.81 m/s^{2}}{51.0 kg} = 2.74 m/s^{2}

The final speed of the crate at the end of 10.0 m will be the initial speed of the following 10.5 meters, so:

v_{f}^{2} = v_{0}^{2} + 2ad_{2}  

v_{f} = \sqrt{(9.39 m/s)^{2} + 2*2.74 m/s^{2}*10.5 m} = 12.07 m/s  

Therefore, the final speed of the crate after being pulled these 20.5 meters is 12.07 m/s.  

I hope it helps you!                              

7 0
3 years ago
The force on the spring is F0 and it stores elastic potential energy PEs0. If the spring displacement is tripled to 3x0, determi
Dimas [21]

Answer:

Explanation:

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3 years ago
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Vinil7 [7]
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<span>5010J</span>

Explanation:

Work is force times distance, or

<span>W=F⋅d</span>.

Substitute in values from the question to get

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6 0
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Differenciate between fundamentals quantities and derived quantities
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Answer:

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Explanation:

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