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ser-zykov [4K]
3 years ago
14

A=vf-vi/t is the equation for calculating the acceleration of an object. write out the relationship shown in the equation using

words
PLEASE I NEED HELP!! I'm timed!

20 points!
Physics
1 answer:
Lelechka [254]3 years ago
3 0
Basically it is the difference in velocity divided by the time it takes to make that change.
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A volleyball is spiked so that its incoming velocity of +2.63 m/s is changed to an outgoing velocity of -20.2 m/s. The mass of t
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Answer:

The impuise is 7.9905 kg*m/s

Explanation:

Step one:

given data

v1= +2.63m/s

v2=-20.2m/s

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Step two:

From the expression for impulse

Ft= mΔv

substituting our data into the expression we have

Ft= 0.35*(-20.2-2.63)

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Ft=7.9905 kg*m/s

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<h3><u>Answer;</u></h3>

just before it reaches the ground

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  • <em><u>When the ball is going down the potential energy will be converted to kinetic energy up to a point just before it hits the ground, where kinetic energy is maximum since the velocity of the ball is maximum, due to gravitational acceleration.</u></em>
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