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Masteriza [31]
3 years ago
8

A 2 kg toy car moves at a speed of 5 m/s. What is the kinetic energy of the car?

Physics
1 answer:
ANTONII [103]3 years ago
5 0

Answer:

<h2>The answer is 25 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

KE =  \frac{1}{2} m {v}^{2}  \\

m is the mass

v is the velocity

From the question we have

KE =  \frac{1}{2}  \times 2 \times  {5}^{2}  \\  = 1 \times  {5}^{2}

We have the final answer as

<h3>25 J</h3>

Hope this helps you

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Answer:

0.1962N.

Explanation:

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The weight of the pen is 0.02 x 9.81, which is 0.1962N. If the pen is not to fall the frictional force needs to be equal to this force,

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(Hope this helps can I pls have brainlist (crown)☺️)

3 0
2 years ago
A pendulum completes 2 oscillation in 5s.
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Answer:

<h2>a) 2.5 s</h2><h2>b) 1.55 m</h2><h2 />

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<h3>Given :-</h3><h2>Completes 2 oscillation in 5s.</h2><h2>A) Time period = ?</h2><h2 /><h2>t \:  = \frac{total \: time \: }{total \: no \: of \: oscillation}</h2><h2 /><h2>\frac{5}{2}  = 2.5s</h2>

<em>Thus 1 oscillation is completed in 2.5 </em><em>s.</em>

<h2>B) If g = 9.8 ms−², find its length.</h2><h2>t \:  = 2\pi  \frac{ \sqrt{l} }{g }</h2><h3>= 2.5s </h3><h3>2\pi \frac{ \sqrt{l} }{g}</h3><h3>Length = ? </h3><h2>\frac{ {t}^{2} }{4\pi {}^{2} }  \times g</h2><h3 /><h3>\frac{2.5}{ {4}^{2} }  \times 9.8 = 1.55m</h3>

Thus the length of g = 9.8 ms −² = 1.55m

<h2>Hope it helps u.......</h2><h2>STAY SAFE, STAY HEALTHY AND BLESSED .</h2><h2> HAVE A MARVELOUS DAY AHEAD !</h2><h2>THANK YOU !</h2>
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NEGATIVE

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ad-work [718]

Explanation:

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P = \dfrac{\Delta W}{\Delta t}

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