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3 years ago

What is the mass of a person walking at a speed of 0.8 m/s if their momentum is 52.0 kg m/s

Physics

1 answer:

AnnyKZ [126]3 years ago

3 0

Answer:

Explanation:

The mass of the person can be found by using the formula

$m = \frac{p}{v} \\$

p is the momentum

v is the velocity

From the question we have

$m = \frac{52}{0.8} \\$

We have the final answer as

Hope this helps you

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Mademuasel [1]

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Time t = 3 sec

From first equation of motion

v = u+at

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(a) We know that force is given by

F = ma

So force will be $F=290\times 2=580N$

(b) From second equation of motion we know that

$s=ut+\frac{1}{2}at^2=0\times 3+\frac{1}{2}\times 2\times 3^2=9m$

We know that work done is given by

W = F s = 580×9 =5220 j

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$P=\frac{W}{t}=\frac{5220}{3}=1740Watt$

(d) Time t = 1.5 sec

So $P=\frac{W}{t}=\frac{5220}{1.5}=3466.66Watt$

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