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What is the power expended if a boy pulls a sled up a hill is 425 J in 10.5 seconds?
To calculate power, you can use the formula: Power = Work / Time. In this case, the work done is 425 J and the time taken is 10.5 seconds. Plugging these values into the formula, the power expended by the boy to pull the sled up the hill is 40.48 watts.
Do sled dogs and people work as a team?
Sled dogs and people can work together by sharing their food together
Do most muscles work independently?
yes
Why do most muscles Work in pair?
Skeletal muscles work in pair because of the limitation that these muscles can only contract or pull and can only move in one direction.
If a worker used 6000 joules of work to pull his sled 70 seconds what power does he need?
6000 joules / 70 seconds = 85.71 watts
What does cheerleading do for your body?
In cheerleading, you always (most of the time) work on conditioning. Which means you work on arms, shoulders, back, stomach muscles, and leg muscles.
What muscle groups can you work out with exercise bands?
With exercise bands, you can work out tons of muscles. Muscles that you can work out are arm muscles, leg muscles and back muscles. With leg muscles, you can work out the thighs, and calves muscles.
When you pull a sled through the snow why does only part of your force do work?
Answer 1 - This is because of friction. Answer 2- This is because the force you exert must be in the same direction as the objects motion. So the part pulling forward does work, when the force pulling upward does not.
How much work must be done on a 5g sled to increase its speed from 10 ms to 15 ms?
The work done on the sled can be calculated using the work-energy principle. The change in kinetic energy of the sled is equal to the work done. Therefore, the work done on the sled would be the change in kinetic energy, which is calculated as (1/2) * m * (vf^2 - vi^2), where m is the mass of the sled (5g = 0.005 kg), vf is the final velocity (15 m/s), and vi is the initial velocity (10 m/s).
When muscles are at work?
muscles are at work All the time>
How do muscles work when you are jumping?
muscles work my legs
How much work is done if the sled moves 10 horizontally?
The work done on the sled is given by the formula: work = force x distance x cos(theta), where theta is the angle between the force and the direction of motion. If the force is applied horizontally and moves the sled horizontally, the angle theta is 0, and the work done is simply force x distance.
