Initial velocity=u=3m/s
Final velocity=v=10m/s
Time=t=8s




Using second equation of motion





Please give us the picture and tell us what quantity you're asked to find.
increase kinetic energy of body
Answer:
- 20 N
Explanation:
20 N - 40 N = - 20 N
The resultant force is - 20 N.
Answer:
Let M1 = 8 kg and M2 = 34 kg
F = M a = (M1 + M2) a
F = M2 g the net force accelerating the system
M2 g = (M1 + M2) a
a = M2 / (M1 + M2) g = 34 / (42) g = .81 g = 7.9 m/s^2