3 years ago

How do speed and velocity differ

Physics

1 answer:

Elanso [62]3 years ago

4 0

Answer: Speed is a scalar

LVelocity is a vector quantity

Explanation: Scalar quantity such as speed only have magnitude in them. It only indicates the strength on how an object is moving. For velocity it is a vector quantity it both have magnitude and involves direction where the object is moving.

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An object is initially moving at an unknown velocity. It accelerates at a rate of 1.5m/s2 to a new velocity of 60 m/s in 25 s. W

Alexandra [31]

<h3>Answer: 22.5 m/s</h3>

=====================================================

Work Shown:

acceleration = ( finalVelocity - initialVelocity )/(change in time)

1.5 = (60 - x)/(25)

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37.5 = 60-x

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Mrac [35]

Answer: Ranking from highest to lowest rocket power,

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3 years ago

How much force is used if ms Johnston can bench press 123 kg in 3 seconds, using 2500 j of work? The total distance from the bar

alexgriva [62]

The force applied would be 2083.3N

<u>Explanation:</u>

Given:

Mass, m = 123kg

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Work, W = 2500J

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Force, F = ?

We know:

Work = Force X distance

$2500 = F X 1.2m\\\\F = \frac{2500}{1.2} \\\\F = 2083.3N$

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3 years ago