Question

The net force acting a body of mass of 1 kg moving with a uniform velocity of 5ms-1is ...... ....................

Answer 1

Hey!

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Given,

Mass = 10 kg
Velocity = 2 m/s
Net force = ?

Net force will be 0 . This is because an object moving with a uniform speed has zero net acceleration, as there is no change in velocity.

And according to Newton's second law of motion, we know, Acceleration is directly proportional to Force.

If acceleration = 0
Force = Mass × Acceleration
Force = Mass × 0
Force = 0

Thus, Net force acting on the body is 0.

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Hope it helps...!!!

Answer 2

Hi,
Thats tricky!

Uniform velocity i.e NO CHANGE IN VELOCITY

Force = mass  * acceleration

Acceleration is  rate of change of velocity over time

Since the body is in uniform velocity Change in velocity = 0.

So acceleration will be      
   change in velocity   
=-------------------------    =  0/time = 0         
         Time

Acceleration is ZERO

So , we get FORCE = 0

So Net force acting on any body with uniform velocity is 0
ZERO.
Hope it helped!