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andreyandreev [35.5K]
3 years ago
10

A car starts from the rest and retains the acceleration of 4m/S2 in 20 second.calculate its final velocity​

Physics
1 answer:
crimeas [40]3 years ago
5 0

Answer:

80m/s

Explanation:

v=u +at

but the car start from rest so intial velocity (u) =o

therefore,

v=0+4(20)

v=80m/s

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A railroad car is pulled through the distance of 960 m by a train that did 578 kJ of work during this pull.
Wittaler [7]

Answer:

<h2>602.08 N</h2>

Explanation:

The force supplied by the train can be found by using the formula

f =   \frac{w}{d}  \\

w is the workdone

d is the distance

From the question we have

f =  \frac{578000}{960}  \\  = 602.083333...

We have the final answer as

<h3>602.08 N</h3>

Hope this helps you

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This new research question would help you find out if there is an already existing mask that could be made better.

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8 0
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