Recent content by sjcorona

I did that too,Emec2 - Emec1 is still 0.61

A 75g Frisbee I thrown from a point 1.1 m above the ground with a speed 12 m/s when it has reached a height $.1 m its speed is 10.5 m/s What is the reduction in Emec of the frisbee-earth system because of air drag? At first I thought Since ΔEmec= Δk+Δu the change is -0.61 J Then I...

Wow...thank you

1.14 So are you saying that all I had to do to solve this was make a ratio of it all? That sounds far too easy

New velocity= 1.14(d)/t I can plug that back into my kinetic=spring potential but I still have too may unknowns

Two children are playing a game in which the try to hit a small box on the floor with a marble fired from a spring loaded gun mounted on a table. The target box is horizontal distance D=2.20 m from the edge of the table. Bobby compresses the spring 0.011m but the center of the marble falls 0.27...

A slide loving pig slides down a 35 degree slide in twice the time it would taken to slide down a frictionless 35 degree slide. What is the coefficient of kinetic friction between the pig and slide? So with the frictionless slide I found ax=8.03m/s^2 but without velocity or the length of...

While two forces act on it a particle is to move at the constant velocity v= (3m/s)I - (4m/s)j. One of the forces is F1=(2n)I +(-6n)j what is the other force? I want to say (1n)I + (2n)j but then I couldn't decided why that would be true. I guess I liked those numbers because if the mass...