Answer:
answer is option 4
Explanation:
you have to use option 4 because u need to find out initial velocity (Vi)
Matter. I don't really know how to explain it. Sorry. But anyways, Hope this helps!
Answer:
1.57772 m
Explanation:
M = Mass of actor = 84.5 kg
m = Mass of costar = 55 kg
v = Velocity of costar
V = Velocity of actor
= Intial height of actor = 4.3 m
g = Acceleration due to gravity = 9.81 m/s²
As the energy of the system is conserved

As the linear momentum is conserved

Applying conservation of energy again

The maximum height they reach is 1.57772 m
The only reasonable choice from this list is choice-A.