Answer:

Explanation:
We have given mass m=0.155 kg
Force constant K = 305 N/m
Distance 
Velocity 
The total energy at any position of the motion is give by
here
is energy due to motion and
is energy due to spring elongation
So total energy 
Answer:
1.16kg is the answer. Hope this helped
Explanation:
Acceleration = (change in speed) / (time for the change)
Change in speed = (end speed) - (start speed) = (15 m/s - 7 m/s) = 8 m/s
time for the change = 2 minutes = 120 seconds
Acceleration = (8 m/s) / (120 seconds)
Acceleration = 0.067 m/s²
It's the energy your body spends to just keep you breathing and your heart beating ... just being alive, without trying to DO anything.