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## Homework Statement

*The experiments drawing is attached.

m=0.1kg

Ek at point O (the moment the ball is being pushed) = 1.25 J

D (0 ; 0) , C (0 ; 0.05), E (0.25 ; 0), F (0.50 ; 0), G (0.75 ; 0)

Friction is neglected

1.Complete the chart by typing if the value of each variable is rising / decreasing / constant / equals to zero. (attachment added)

2.Calculate the balls speed at point O.

3.Calculate the work of ∑F that has been working on the ball from A to C. ( W∑F )

4.The ball reaches one of the holes G/F/E - calculate which one it reaches.

5.Add Cartesian axis on the drawing, locate in it the points :C,D,E,F,G and add to the drawing the route of the ball from point C until the point he touches the ground.

6.Players has springs that pushes the spring with a constant F that is higher/lower than the original spring. Which one does one has to use for the ball to fall after point G? (The distance of AA' stays the same)

*I'm having difficulties with basically everything*

## Homework Equations

Ek=mv^2/2

W=Fx*cosα

W∑F=ΔEk

1/2kΔx^2

W=-ΔU

U=mgh

## The Attempt at a Solution

1. At point A'O: v:rising , a:rising, ∑F:constant, Mechanic Energy: rising

At point OC: v:constant , a:0, ∑F:constant, Mechanic Energy: constant.

From point C until the ball touches the ground: v:constant, a:rising, ∑F:rising, Mechanic Energy: constant.

2.

Ek=mv^2/2 => 1.25 = 0.1v^2/2 => 2.5= 0.1v^2 => v=5 m/s

*If the question has anything missing - please write the answer you would have done just without placing the number in the variable. As in a parametric answer.

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