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Butoxors [25]
3 years ago
10

Compute the power output (watts) during one minute of treadmill exercise, given the following: Treadmill grade-10% Horizontal sp

eed 100 meters per minute Subject's body weight 60 kg (i.e., force 588.6 Newtons) 1 joule 1 newton-meter 1 watt 1 joule per second 1 kcal 426.8 kpm Multiple Choice a. 981 watts b. 9,810 wattsc. 981 wattsd. Power output cannot be calculated given the information above.
Physics
1 answer:
erma4kov [3.2K]3 years ago
6 0

Answer:

c. 981 watts

P=981\ W

Explanation:

Given:

  • horizontal speed of treadmill, v=100\ m.min^{-1}=\frac{5}{3} \ m.s^{-1}
  • weight carried, w=588.6\ N
  • grade of the treadmill, G\%=10\%

<u>Now the power can be given by:</u>

P=v.w

P=588.6\times\frac{5}{3} (where grade is the rise of the front edge per 100 m of the horizontal length)

P=981\ W

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Answer:

2,400kg * m/s

Explanation:

You are missing some information in the question but the rest could be found some where else.

The question gives the masses and starting velocity of each car.

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A 100 g cart is moving at 0.5 m/s that collides elastically from a stationary 180 g cart. Final velocity is calculated to be 0.25m/s.

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Collision in which part of the kinetic energy is changed to some other form of energy is inelastic collision.

For an elastic collision, we use the formula,

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