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3 years ago

A 2.0-kg ball has a momentum of 25kg.m/s what is the ball's speed?

Physics

2 answers:

Reil [10]3 years ago

5 0

We know, momentum = mass * speed

25kgm/s = 2 kg * s

s = 25/2 = 12.5 m/s

Mazyrski [523]3 years ago

5 0

The ball's speed is about 13 m/s

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<h3>Further explanation</h3>

Newton's second law of motion states that the resultant force applied to an object is directly proportional to the mass and acceleration of the object.

$\large {\boxed {F = ma }$

<em>F = Force ( Newton )</em>

<em>m = Object's Mass ( kg )</em>

<em>a = Acceleration ( m )</em>

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$\large {\boxed {F = \frac{\Delta p}{t} }$

<em>F = Force ( Newton )</em>

<em>p = Momentum of Object ( kg m/s )</em>

<em>t = Time Taken ( s )</em>

Let us now tackle the problem !

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<u>Given:</u>

mass of ball = m = 2.0 kg

momentum of ball = p = 25 kgm/s

<u>Asked:</u>

speed of the ball = ?

<u>Solution:</u>

<em>We could use formula for </em><em>momentum</em><em> to solve this problem:</em>

$p = m v$

$v = p \div m$

$v = 25 \div 2.0$

$v = 12.5 \texttt{ m/s}$

$v \approx 13 \texttt{ m/s}$

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<h3>Conclusion :</h3>

The ball's speed is about 13 m/s

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<h3>Learn more</h3>

Impacts of Gravity : brainly.com/question/5330244
Effect of Earth’s Gravity on Objects : brainly.com/question/8844454
The Acceleration Due To Gravity : brainly.com/question/4189441
Newton's Law of Motion: brainly.com/question/10431582
Example of Newton's Law: brainly.com/question/498822

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<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Dynamics

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