Recent content by RKNY

sorry, I went back and changed everything. Now everything seems to be the way I attempted it.

F = G x m1 x m2 / r^2 F = (6.67 x 10^-11) x (7.2) x (0.40) / (0.148) x 2 F = .000000001 Doesn't seem to be right when I go and check it.

Homework Statement A bowling ball (mass = 7.2 kg, radius = 0.13 m) and a billiard ball (mass = 0.40 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?Homework Equations F = G(m1m2/r^2)The...

29.5 was the given in the question. Is the answer looking for the magnitude of the problem when it is right above the wall?

Homework Statement A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 55.9° above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 29.5 m away. The rocket attains its launch speed in a negligibly short period of time, after which its...

Okay, thought about what u said and I believe I figured it out. Please let me know if this is correct. Time it takes for the ball to go up V = V(initial) + (a)(t) 0 = 12.0 + (-9.80*t) t = 1.2244 s Time for the ball to go down from its peak being thrown up 0 = -12.0 + (9.80*t) t =...

Problem 1 I tried using 1.8 as the V(initial), a = -9.80, y = -2.5 V^2 = -1.8^2 + 2(-9.80)(-2.5) V = 7.23 but it was wrong. I don't know but it just seems right to me. Problem 2 originally I put y = -55, v(initial) = 0, a = -9.80 Y = 0 + 1/2(a)(t^2) -55 = 0 + 1/2 (-9.80)(t^2) t = 3.35029

Problem 1 Homework Statement A diver springs upward with an initial speed of 1.8 m/s from a 2.5 m board. (a) Find the velocity with which he strikes the water. (Hint: When the diver reaches the water, his displacement is y = -2.5 m (measured from the board), assuming that the downward...

Problem 1 Homework Statement A golfer rides in a golf cart at a speed of 3.10 m/s for 29.0 s. She then gets out of the cart and starts walking at an average speed of 1.20 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and walking, is 2.10 m/s...

It worked out okay, thanks a bunch!

Homework Statement A football player runs the pattern given in the drawing by the three displacement vectors A, B, and C. The magnitudes of these vectors are A = 5 m, B = 14.0 m, and C = 23.0 m. Using the component method, find the magnitude and direction of the resultant vector A + B + C...

oh stupid me..lol the question is At the turning point, how far is the second cyclist from the campground? i guess if i can somehow figure the first one out i can figure the second part which is... What direction (measured relative to due east) must the second cyclist head during...

Hello, having a little trouble on an intro to physics homework problem. Homework Statement Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1050 m due east and then turns due north and travels another 1430 m before...