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2 years ago

A dolphin can swim at a constant speed of 12.5 m/s. How

Physics

2 answers:

myrzilka [38]2 years ago

6 0

Answer:

$\boxed {\tt 3.6 \ seconds}$

Explanation:

Time can be found by dividing the distance by the speed.

$t=\frac{d}{s}$

The distance is 45 meters and the speed is 12.5 meters per second.

$d= 45 \ m \\s= 12.5 \ m/s$

$t=\frac{45 \ m}{12.5 \ m/s}$

Divide. Note that the meters, or "m" will cancel each other out.

$t=\frac{45 }{12.5 \ s}$

$t=3.6 \ s$

It will take the dolphin 3.6 seconds to swim a distance of 45 meters are 12.5 meters per second.

wlad13 [49]2 years ago

3 0

Answer:3.6 seconds

Explanation: 45/12.5 m/s is 3.6s

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2 years ago

An ideal spring hangs from the ceiling. A 2.15 kg mass is hung from the spring, stretching the spring a distance d = 0.0895 m fr

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Answer:

The kinetic energy of the mass at the instant it passes back through the equilibrium position is 0.06500 J.

Explanation:

Given that,

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Using newton's second law

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Where, f = restoring force

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$k=\dfrac{mg}{x}$

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Using formula of kinetic energy

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Here, $v = A\omega$

$K.E=\dfrac{1}{2}m\times(A\omega)^2$

Here, $\omega=\sqrt{\dfrac{k}{m}}^2$

$K.E=\dfrac{1}{2}m\times A^2\sqrt{\dfrac{k}{m}}^2$

$K.E=\dfrac{1}{2}kA^2$

Put the value into the formula

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2 years ago

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Answer:

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Intrinsic

This type of motivation is comes from the individual

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Both conscious and unconscious factors influence motivation.

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