You roll a ball up a hill, releasing the ball at 12 m/s. The angle of the hill gives the ball an acceleration of 6.0 m/s/s, directed down the hill. How long will it take the ball to return to you at the bottom of the hill

it take the ball to return to you at 4 sec

Explanation:

given data

releasing the ball = 12 m/s

acceleration a = 6.0 m/s²

solution

when releasing the ball is 12m/s

so initial speed will be  u = 12m/s  

and final speed will be  v = -12m/s  

and when ball is rolled up with 12 m/s so by by law of conservation of energy ball roll back to same point with same speed  so we use here  kinematic equation  

v = u + at    1

put here value and we get

-12 = 12 + (-6) × t  

solve it we get time t

time = 4 sec

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force