A constand force acting on a body of mass 3.0 kg changes its speed from `2.0 ms^(-1) ` to `3.5 ms^(-1)` in 25 s . The direction of the motion . What is the magnitude and direction of the force ?

Explanation

here `m= 3.0 kg`
` mu = 2.0 m//s `
` v= 3.5 m//s`
` t= 25s s ,F=? `
` f=m a =(m (v-u ))/(t) = ( 3.0 (3.5 -2.0 ))/(25 )`
` = 0.18 N`
the force is along the direction of motion.