[The illustration shows a lamp giving off light. What form of energy does the lamp use to produce light?
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An athlete produced 840 watts of power in 0.6 seconds. And will produce 504 joule of work did this individual perform during the exercise.
<u>Solution:</u>
we know that power is the work done completed in a given interval of time.
Power =
also, Work = Power × Time
Work = 840 × 0.6 = 504 joule
What is Power?
- The quantity of work that can be accomplished in a certain amount of time is measured by power.
- Power is expressed in joules per second (J/s) this is because work is denoted by the symbol J and time by the symbol s.
- This is the watt, which is also known as the power unit in SI (W). One joule of labor per second is equal to one watt.
- The number of watts that a device uses is indicated on labels for lightbulbs and other small appliances like microwaves.
- A force must be applied in order for work to be completed, and there must also be motion or displacement in the force's direction.
- The amount of force multiplied by the distance moved in the force's direction is known as the work done by a force acting on an item. Work has no direction and only magnitude. Work is a scalar quantity as a result.
Know more about work power numerical brainly.com/question/181496
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The total distance traveled by the car at the given velocity and time is 900 m.
The given parameters:
- <em>initial velocity of the car, u = 20 m/s</em>
- <em>acceleration of the car, a = 12 m/s²</em>
- <em>time of motion of the car, t = 20 s</em>
- <em>final time = 30 s</em>
- <em>final acceleration = 2 m/s²</em>
The final time of motion of car before coming to rest is calculated as follows;
The graph of the car's motion is in the image uploaded.
The total distance traveled by the car is calculated as follows;
Thus, the total distance traveled by the car at the given velocity and time is 900 m.
Learn more about velocity-time graph here: brainly.com/question/24874645
