Recent content by nmegabyte

A 48 kg skier starts from rest at a height of H = 28 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. Neglect the effects of air resistance and assume the ramp is frictionless. Could u give me a formula i need to start...

still don't get it

The only force acting on a 3.4 kg body as it moves along the positive x-axis has an x component Fx = - 6x N, where x is in meters. The velocity of the body at x = 3.0 m is 8.0 m/s. a) What is the velocity of the body at x = 4.0 m? m/s (b) At what positive value of x will the body have a...

there is another problem here is the link if u could help me with that i don't even know how to start https://www.physicsforums.com/showthread.php?p=2677818#post2677818

142.1

its is the same but i guess they cancel each other because of the same force is this correct?

hmmm i am trying it should be equal to zero the other force so they cancel each other isn't right?

A block with a weight of 3.0 N is at rest on a horizontal surface. A 0.9 N upward force is applied to the block by means of attached vertical string. (a) What is the magnitude of the force of the block on the horizontal surface?

http://www.freeimagehosting.net/uploads/fc212c688b.jpg please any ideas for 3

now i understand why because when constant velocity acc is 0 and when acc is zero the net force is 0 so F1+F2 =0 is this correct conclusion?

F2 = ma - F1 using this formula i can find the other force how i am not that great at physics.

but i need to find a mass in order to find F2, F2 = ma - F1

i guess zero they cancel each other?

if it is moving, it continues to move at constant velocity i believe so

While two forces act on it, a particle is to move at the constant velocity v = (3 m/s) - (4 m/s) . One of the forces is F1 = (4 N) + (- 7 N) . What is the other force? i know the formula Fnet=ma and i can't use it to find mass in this case how can i find mass first so and i know that...