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Iteru [2.4K]
2 years ago
15

An athlete runs a 100 m race in 10 seconds against a friction force of 100N. How do I work out his power output?

Physics
1 answer:
Rashid [163]2 years ago
6 0
They seem to cancel each other out which is odd
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The phenomenon of vehicle "tripping" is investigated here. The sport-utility vehicle is sliding sideways with speed v1 and no an
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Answer:

v_1  = 3.5 \ m/s

Explanation:

Given that :

mass of the SUV is  = 2140 kg

moment of inertia about G , i.e I_G = 875 kg.m²

We know from the conservation of angular momentum that:

H_1= H_2

mv_1 *0.765 = [I+m(0.765^2+0.895^2)] \omega_2

2140v_1*0.765 = [875+2140(0.765^2+0.895^2)] \omega_2

1637.1 v_1 = 3841.575 \omega_2

\omega_2 = \frac{1637.1 v_1}{3841.575}

\omega _2 = 0.4626 \ v_1

From the conservation of energy as well;we have :

T_2 +V_{2  \to 3} = T_3 \\ \\ \\  \frac{1}{2} I_A \omega_2^2 - mgh =0

[\frac{1}{2} [875+2140(0.765^2+0.895^2)](0.4262 \ v_1)^2 -2140(9.81)[\sqrt{0.76^2+0.895^2} -0.765]] =0

706.93 \ v_1^2 - 8657.49 =0

706.93 \ v_1^2  = 8657.49

v_1^2  =  \frac{8657.49}{706.93 }

v_1 ^2 =  12.25

v_1  = \sqrt{ 12.25

v_1  = 3.5 \ m/s

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3 years ago
Enny and Anne wanted to see who could throw a ball the hardest. They decided to each throw a ball against a wall as hard as they
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Answer:

wha t kind of variables

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Boyles law

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So 40.0 mL is the new volume as it is compressed.
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Which diagram is the best model for a solid?<br> Substance A<br> Substance B<br> О Substance C
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Answer:

This link was diagram

Explanation:

https://doubtnut.app.link/FnsNC80Dccb

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