Recent content by Bottomsouth

I understand how you get the horizontal component but how did you arrive to the vertical one. -300 m cleared in 7.82 s is -38.3 m/s. Now -38.3 x 2 = -76.6. But what equation did you use?

D = 1.99 x 10^33 / (4/3)(3.14)(7.5 x 10^8)^3 = 6.338 x 10^23 Seems to be wrong.

D = 1.99 x 10^33 / (4/3)(3.14)(7.5 x 10^9)^3 = 2.09 x 10^11?

Homework Statement In about 5 billion years, at the end of its lifetime, our sun will end up as a white dwarf, having about the same mass as it does now, but reduced to about 15,000 km in diameter.What will be its density at that stage? g/cm^3 Homework Equations D=m/v 4/3(3.14)r^3...

Homework Statement When a piece of wood is pressed against a spring and compresses the spring by 4.00cm , the wood gains a maximum kinetic energy K when it is released. How much kinetic energy (in terms of K) would the piece of wood gain if the spring were compressed 20.0 cm instead? K_2...

How do I find normal force? n-mg = C_f? n - 350(9.81) = C_f what is n?

Homework Statement A 350kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop shown in the accompanying figure. http://session.masteringphysics.com/problemAsset/1027487/5/1027487.jpg 1. How fast is this roller coaster moving at point B? 2. How hard...

ok haha, what is the 121.92 m? besides the horizontal direction?

would it vcos(33)t= 121.92? 400ft = 121.92 m

Goes 400 ft in the horizontal direction. t=cos33/v Vsin33 - (.5) -9.8 * cos33/v = 0 Am I getting warmer?

Vx=x/t then 0=Vyit = 1/2gt^2 Vcos33*t = ? Vsin33 - (1/2)gt = 0 I think I am in the right track, still alittle lost.

I believe I will be using components of initial velocity. Still alittle lost on how to proceed. U0y = U0sin(33) U0x = U0cos(33)

49.5, thanks. Have had very little sleep.

Homework Statement a 76 kg boulder is rolling horizontally at a top of a vertical cliff that is 20m above the surface of a lake. the top of the vertical face of a dam is located 100 m from the foot of the cliff, with the top of the dam level with the surface of the water in the lake. a level...

Homework Statement A batted baseball leaves the bat at an angle of 33.0 above the horizontal and is caught by an outfielder 400 ft from home plate at the same height from which it left the bat What was the initial speed of the ball? How high does the ball rise above the point where it...