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4 years ago

Which statement best explains acceleration?

2 answers:

8 0

Acceleration is just how fast velocity is changing in a certain time. Simply subtract the final velocity from initial velocity, then take that number and divide that by the change in time. If that sounds familiar, it's because it's the same formula you use to find the slope of a line. If you've done calculus, it's finding the secant line, which means you've found the average acceleration using the (change in v)/(change in t). If you need the instantaneous acceleration, you need to take the derivative of your function at a certain time(also calculus.) ignore the last two sentences if you haven't taken calc1

Alexxx [7]4 years ago

5 0

Acceleration is the ratio of a change in velocity to the time over which the change happend

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a force of 5.5 n is applied to an object. the moment arm for the force is 0.84 m. what is the torque produced by the force?

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A force of 5.5N is applied to an object. The moment arm for the force is 0.84 m, the torque produced by the force is <u>4.62N-m</u>.

A force applied perpendicularly to a lever multiplied by its distance from the lever's fulcrum (the length of the lever arm) is its torque. We can find the torque from a force by taking the perpendicular component of that force and multiplying by the magnitude of the R vector where this R vector is the vector that points from the axis to the point where the force is applied.

To calculate torque produced by the force, we have-

Torque= forcexmoment arm

T = fxd

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T=4.62N-m.

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3 years ago

Why does a block of plastic released under water come up to the surface of water.

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A block of plastic released under water will come up to the surface of the water because the density of the plastic is less than the density of water.

<h3>What is density?</h3>

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