You push an object 0.032 m by exerting 0.010 n in force. the work is the force times the distance. how much work have you done expressed in ergs? a. 3200 ergs b. 0.00032 ergs c. 0.32 ergs d. 32 ergs

Work done, W = 3200 ergs

Explanation:

It is given that

Force acting on the object, F = 0.01 N

Distance covered by the object, d = 0.032 m

Let W is the work done by the object. The product of force and the distance is called the work done by the object. Mathematically, it is given by :

W = 0.00032 Joules

Since,

This gives, work done by the object, W = 3200 ergs. So, the correct option is (a).                                                          

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

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