Impulse for Two Objects being Attracted to One Another

[@therandomperson9627]

Also for these problems could you get f of g as a function as time and solve the integral of it to find the impulse

[@jamil5522]

Why can't you keep the m outside the square root?

[@nickkowalski7979]

As the spheres collide, what factors or characteristics of the spheres would affect the elasticity of the collision?

[@FlippingPhysics]

In general, the harder the spheres the more elastic the collision would be. www.flippingphysics.com/collisions.html

[@adamswanson8456]

Is the energy of an individual mass conserved? I tried doing this problem using conservation of mechanical energy of each mass and failed to get an exact answer as the one at the very end of the video.

[@FlippingPhysics]

As shown at 2:13, the mechanical energy of the _system_ is conserved. The mechanical energy of an individual mass is not conserved.

[@abdulsamadkhan5804]

good expanation Sir

[@ptyptypty3]

I decided to use some numbers in the final equation.. I let X = infinity and R = ZERO.... WHOA!.. HUGE MISTAKE.. I prefer the variable result Better.. :) ... excellent presentation.. !! a unique problem... I can use your approach here to find the Final Velocity of the EARTH if it were to FREE Fall into the Sun.. :) .. THANK YOU!!..

[@FlippingPhysics]

You are welcome!!!

[@Nothingatallllll]

yea I'm failing the AP test.

[@FlippingPhysics]

Relax. This problem is on the more difficult side and there is plenty of time until the exam.

[@MrLittelmerciles]

Woah I have never been here this early before.

[@FlippingPhysics]

Congrats!

[@BanValsimot]

I am thinking that if you use numbers you are more focused on getting a result ("mathematical" way) and if you use variables you are more focus on describing what is going on (more "physics" way) than what number will you get. I always use numbers and I am more focused to get the result in number when solving :D