True is the answer. I believe
Answer:
Only at point a
Explanation:
If the velocity is greater than zero, than the object must be moving.
combustion of fossil fuels would be the correct answer when dealing with the alteration of the carbon cycle.
Answer:
The amount of potential energy that was initially stored in the spring is 88.8 J.
Explanation:
Given that,
Mass of block = 1.60 kg
Angle = 30.0°
Distance = 6.55 m
Speed = 7.50 m/s
Coefficient of kinetic friction = 0.50
We need to calculate the amount of potential energy
Using formula of conservation of energy between point A and B



Put the value into the formula


Hence, The amount of potential energy that was initially stored in the spring is 88.8 J.