You push your textbook 1.5 m along a horizontal tabletop with a horizontal push of 2.4 n while the opposing force of friction is 0.6 n. what is the net work done on the book?

2.7 J

Explanation:

Firstly calculate the resultant force...,

; Resultant force = 2.4 - 0.6

= 1.8 N

; Hence net work done = Resultant force × Distance moved by the body

; Net work done = 1.8 × 1.5

; Net work done = 2.7 J

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min