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Tju [1.3M]
3 years ago
12

We cannot consider something to be work unless

Physics
2 answers:
iren [92.7K]3 years ago
5 0
<span>force applied causes movement of an object in the same direction as the applied force.</span>
kari74 [83]3 years ago
5 0

Explanation:

The product of applied force and the displacement is called the amount of work done by an object. For the work to be done the force and the displacement are two important factors. The mathematical expression for the work done is given by :

W=Fd\ cos\theta

Where

\theta is the angle between applied force and the displacement

When \theta=90, W = 0

\theta=0, W = F d

\theta=180, W = -F d

So, we cannot consider something to be work unless force applied causes movement of an object in the same direction as the applied force. Hence, this is the required solution.

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A race car makes three and half laps around a circular track in 4.5 min. What is the car’s angular speed?
slavikrds [6]

Answer:

the angular speed is around 45

Explanation:

7 0
2 years ago
A horizontal force of 100 N is required to push a 50 kg crate across a factory floor at a constant speed. What is the accelerati
luda_lava [24]

Answer:

a = 2m/s^2

Explanation:

Force (F) = 100 N

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Here,

F = m×a

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Thus, the acceleration on the cart is a = 2m/s^2

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6 0
2 years ago
Why is acceleration of an object moving at a constant velocity always zero?
k0ka [10]

Answer:

If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).

Explanation:

In the middle, when the object was changing position at a constant velocity, the acceleration was 0. This is because the object is no longer changing its velocity and is moving at a constant rate.

8 0
2 years ago
What is the use of force to move an object over a distance?
steposvetlana [31]

Answer:

In physics, work is defined as the use of force to move an object. For work to be done, the force must be applied in the same direction that the object moves. Work is directly related to both the force applied to an object and the distance the object moves.                                                                                              <em>[I HOPE THIS HELPS* PLS MARK ME BRAINLIEST]</em>

6 0
2 years ago
Why water in earthern pot remain cool in summer
hjlf

Answer:

Since in summer, the eastern side do not face the sunlight and hence the water in eastern pot remain cool in summer.

8 0
2 years ago
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