Question

Answer all of these questions and you will get the brain list answer

Answer 1

answer:

39.02

45.78

88.12

76.90

i think this is it

Answer 2

Answer:

a). whenever the ball is at it's highest on either side (it stops, so kinetic energy is 0)

b). whenever the ball is at the bottom (A) - it cannot go lower, so potential energy is 0.

c). whenever the ball accelerates, so when it's going down from either side before reaching A (at that point it's going up and thus slowing down).

d). whenever the ball is ascending, so when it's goind up from A to either side

Explanation:

Kinetic energy is based on velocity

$E_K = \frac{mv^2}{2}$

mass is constant, so we need to find a point where v = 0 to solve a), and points where v is increasing to solve b).

Potential energy is based on height vs "the bottom" (here, the minimum altitude is "the bottom").

$E_P = mgh$

mass and gravitational acceleration are constant, so we need to find a point where h = 0 to solve b) and the points where h is increasing to solve d).