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seropon [69]
3 years ago
15

If you exert a force of 51 n to walk 6 m up a flight of stairs in 9 seconds, how much power do you use? answer in units of w.

Physics
1 answer:
Ratling [72]3 years ago
4 0
P=W/T
=51*6/9

=34 watt
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It is now 9:11 a.m. but when the bell rings at 9:12 a.m. Susie will be late for Mrs. Garner's U.S. History class for the 3rd tim
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Answer:

3.1 m/s

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47 + 63 + 76 = 186 meters.

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Problem 6: A bullet in a gun is accelerated from rest from the firing chamber to the end of the barrel at an average rate of 6.3
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Answer:

v = 5.166 10² m / s

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3 years ago
Three objects of the same mass begin their motion at the same height. One object falls straight down, one slides down a low-fric
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mamaluj [8]

Explanation:

It is given that,

The acceleration of a particle, a=-8\ m/s^2 (negative as the particle is decelerating)

Initial distance, x₁ = 20 m

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New distance x₂ = 4 m

Velocity, v = 10 m/s

(A) Calculating initial distance using second equation of motion as :

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20=4u+\dfrac{1}{2}(-8)\times 4^2

u = 21 m/s

When velocity of the particle is zero, time taken is t (say). Using first equation of motion as :

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0=21+(-8)t

t = 2.62 seconds

So, the velocity of the particle is zero at t = 2.62 seconds.

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v=21+(-8)\times 11

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Total distance covered at t = 11 s. The overall path travelled by the particle during its entire journey is called total distance covered.

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d = 132.48 m

So, the distance travelled by the particle at t = 11 seconds is 132.48 meters.    

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