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Dahasolnce [82]

3 years ago

7

If John has 8 apples and his train is 7 minutes early. Calculate the mass of sun at 12:12 pm

1 answer:

tia_tia [17]3 years ago

4 0

The mass of the sun is proportional to the velocity of the motorcycle squared times the amount of birds in the sky.

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Two difference between lever and pulley

Annette [7]

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7 0

3 years ago

It would really help if anyone could answers please and thanks

mojhsa [17]

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3 years ago

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Katelyn (55 kg) is practicing a drop jump in the biomechanics lab. She steps off a plyometrics box, lands on the force plate, an

suter [353]

Answer:

J = 357.5 kg*m/s

Explanation:

The impulse exerted on Katelyn when she was on the force plate, is equal to the change in her momentum, according to Newton's 2nd Law.
Assuming as the positive direction the upward direction (coincident with the positive y-axis) we can express the initial momentum as follows:

$p_{o} = m*v_{o} = 55 kg * (-3.0 m/s) (1)$

By the same token, the final momentum is as follows:

$p_{f} = m*v_{f} = 55 kg * (3.5 m/s) (2)$

As we have already said, the impulse J is just equal to the change in momentum, i.e., the difference between (2) and (1):

$J = p_{f} - p_{o} = m* (v_{f} -v_{o}) = 55 kg* (3.5m/s- (-3.0m/s)) = 357.5 kg*m/s (3)$

5 0

3 years ago