Question

Can you help me please? Thank you.

Answer 1

1) 20N
2) 5 `m/s^2`

Explanation:

1) Just add all the forces!

`F_("net") = F_1+F_2+F_3`

`F_("net") = -10+5+25=-10+30=20N`

2) `F=ma`
Here, `20N=4"kg"*a`

`=>a=(20cancel(kg)*m/s^2)/(4cancel(kg))`
`=>a=5m/s^2`