Define SI unit of force. A force of 2N acting on a body changes its velocity uniformly from 2 `ms^(-1)` to 5 m`s^(-1)` in 10 s. Calculate the mass of the body.

Explanation

The SI unit of force is the newton.
efinition: The force with which an acceleration of 1 m`s^(-2)` is produced in a body of mass 1 kg is called IN.
`u=2ms^(-1)` .t=10 s,F=2 N
m=?
F=ma
`therefore F=(m(v-u))/(t)`
`2 =(m(5-2))/(10)`
`therefore 2xx10=mxx3`
`therefore m=(20)/(3)6(2)/(3)`
The mass of the body is `6(2)/(3)` kg