2 years ago

Which is a unit for time? a) kilometers b) meters c) days d) meters/second

1 answer:

6 0

Kilometers is distance, meters is distance, days is a form of time, and meters a second is distance.

It would be C, I believe.

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use a strong cable with large weight on the end
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3 years ago

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Anestetic [448]

True would be the Correct answer

5 0

3 years ago

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A load of mass 5kg is raised through a height of 2m. calculate the work done against (g=10mls)

Illusion [34]

The work done against gravity is 100 J

Explanation:

The work done against gravity in order to lift an object is equal to the change in gravitational potential energy of the object:

$W=mg\Delta h$

where

m is the mass of the object

g is the acceleration of gravity

$\Delta h$ is the change in height of the object

For the object in this problem, we have:

m = 5 kg

$g=10 m/s^2$

$\Delta h = 2 m$

Substituting into the equation,

$W=(5)(10)(2)=100 J$

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3 0

3 years ago

how long does it take adrian to reach his destination if his displacement is 253 meters and he walks north with a velocity of 1.

klemol [59]

Velocity = displacement/time

1.6 = 253/t

t = 158.125

It takes them about 158 seconds

4 0

3 years ago

Which phrase is the best definition of energy

raketka [301]

Answer:

The capacity for doing work.

Explanation:

It has the forms kinetic, potential, thermal, electric, nuclear or other forms of energy.

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3 years ago