3 years ago

HELPPPPPPPPPPP

1 answer:

8 0

Answer:

The efficiency is never 100% because some energy will either escape through theromal lose or actualy been lost throughout the process of operation. Not 100% of any energy could be converted into moving anything.

Explanation:

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An athlete completes 1 laps around a track with a radius of 25 meters in 180 seconds. What is the magnitude of the athlete's tan

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Answer:

0.872m/s

Explanation:

Tangential velocity is given by the formula,

$v= 2\pi r/ t$

In the question given,

radius= 25meters

time= 180secs

pie= 3.14

number of laps= 1

The magnitude of tangential velocity equals;

$\frac{1lap* 2 *3.14 *25m}{180secs}$

v = 157m/180secs

Therefore, the magnitude of the tangential velocity

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A 42.2 kg sled is pulled forward

zaharov [31]

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refer brainly.com/question/24557767

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2 years ago