3 years ago

What is the impulse of a 3kg object accelerating from rest to 12m/s?

1 answer:

6 0

To find the impulse you multiply the mass by the change in velocity (impulse=mass×Δvelocity). So in this case, 3 kg × 12 m/s ("12" because the object went from zero m/s to 12 m/s).

The answer is 36 kg m/s

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Answer:

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Explanation:

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second law of momentum defines

F = ma

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from hear

since v is directly proportional to the force and the force remain the same, the increase in the cart speed will also remain the same.

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Work done by a given force is given by

$W = F.d$

here on sled two forces will do work

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2. Frictional force due to ground

Now by force diagram of sled we can see the angle of force and displacement

work done by Max = $W_1 = Fdcos\theta$

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Now similarly work done by frictional force

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3 years ago

Two engines do same work in different time intervals.Which will have more power?

Angelina_Jolie [31]

Answer:

who done work in less time will have more power

Explanation:

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Yes the correct answer was

A) The box will not move.

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3 years ago