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yawa3891 [41]
2 years ago
5

An object is accelerating if there is a change in speed and/ or which factor A.Time B.Position C.Direction D.Displacment

Physics
2 answers:
astra-53 [7]2 years ago
5 0

"Acceleration" is a change in speed, or direction of motion, or both.

enot [183]2 years ago
5 0

hey there!!!



I believe the answer is C). Direction. Since when something in speed changes, it can cause the direction to change or position but I would mainly say if there is a change in spped then the dircetion will somehow or somewhat change also.





Hope that helps!!! :)

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Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds
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Answer: 4

The mechanical advantage is the ratio of the force exerted  by the object to the force applied to do work on it.

Here, Jeff tried to lift a rock weighing 600 pounds by wedging board under the rock. Jeff who weighs 150 pounds uses all his weight to exert force on lever and lift rock.

Mechanical advantage, M.A.=\frac{weight\hspace{1mm}of\hspace{1 mm}rock}{weight\hspace{1mm}of\hspace{1 mm}Jeff}=\frac{600 pounds}{150 pounds}=4.

Therefore, the mechanical advantage that lever provided to Jeff in lifting rock is 4.

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2 years ago
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A 1,650 kg SUV comes uniformly to a stop. If the vehicle is accelerating at -1.3 m/s^2,
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3 years ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elect
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Speed of the alpha particle is v=1.8180\times 10^3m/sec      

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4 0
3 years ago
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A solid sphere of mass 8.6 kg, made of metal whose density is 3,400 kg/, hangs by a cord. When the sphere is immersed in a liqui
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\rho_l\times \frac{8.6}{3400}\times 9.8=8.6\times 9.8-38

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