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3 years ago

13

William tell shoots an apple from his son's head. the speed of the 130-g arrow just before it strikes the apple is 24.8 m/s, and

at the time of impact it is traveling horizontally.

1 answer:

shtirl [24]3 years ago

4 0

The kinetic energy of the arrow at that instant is 40 joules.

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What is the magnitude of the velocity when the elastic potential energy is equal to the kinetic energy? (Assume that U=0 at equi

zhannawk [14.2K]

Answer:

Explanation:

General Equation of SHM is given by

$x=A\cos \omega t$

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where x=position of particle

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t=time

At any time Total Energy is the sum of kinetic Energy and Elastic potential Energy i.e. $\frac{1}{2}kA^2$

where k=spring constant

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also it is given that Potential Energy(U) is equal to Kinetic Energy(K)

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at $x=\frac{A}{\sqrt{2}}$

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3 years ago

A person is drawing water from a well, pulling up a bucket that weighs 4.50 kg, at a constant speed. What is the force exerted o

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The equation for work (W) done by an electric field is:

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