Answer:

Explanation:
The roller coaster begins with maximum kinetic energy and no gravitational potential energy. The gravitational potential energy reaches its maximum when roller coaster is upside down at the top of the circle. The physical model for the roller coaster is constructed by means of the Principle of Energy Conservation:

The minimum velocity is:

Let assume that radio of curvature is measured in meters. Hence:


Resitance (R)= 10 Ohm
Potential difference (V) = 9V
V= IR
I= V/R
I= 9/10
I= 0.9 Ampere
Therefore 0.9 Ampere of current is flowing through the circuit.
the ancwer is B sound hope it helps
The maximum height the ball reaches is 100ft.
By 2nd Newton's Law.
F =m*g
For 1st body
Let it's force be x
thus,
x = m*g --------- eqn 1
For mass 2,
F = 4m*g
g = F/4m -------- eqn 2
For the first body's force interms of second body substitute eqn 2 into 1
x = m*(F/4m)
x = <u>m</u><u>*</u><u>F</u>
4m
x = F/4
Therefore, the force on mass m interms of F is
F/4.