eglaud said:Homework Statement
A rock approaches the foot of a hill with a speed of 16 m/s. The hill has a slope of 23 degrees, how far up the hill does the rock travel?
Homework Equations
KE = PE
The Attempt at a Solution
I tried mv2/2 = mgy but I know this isn't right since I don't use theta at all. What do I do to change this?
RedDelicious said:Have you drawn a picture?
eglaud said:how far up the hill does the rock travel?
Presumably your y is the vertical ascent, but I don't think that is quite what the question is asking for.eglaud said:mv2/2 = mgy
I think eglaud understands that but has not interpreted the question correctly. See my post #6.AgusCF said:Hello everybody. Sorry for my english. I am not native. I think you must calculate de kinetic Energy at the bottom of the hill. Then, you must calculate the position (dependent with the angle) at the velocity is 0 m/s.
Ouch! Yeap you are right! And I think that the problem wants to calculate the distance that the rock goes up on the lateral of the hill.haruspex said:I think eglaud understands that but has not interpreted the question correctly. See my post #6.
A rock approaches a hill through the force of gravity. As the rock moves closer to the hill, it experiences an increasing gravitational pull towards the hill, causing it to move in that direction.
The speed at which a rock approaches a hill can be affected by various factors such as the mass of the rock, the slope of the hill, and any external forces acting upon the rock.
Yes, a rock can approach a hill from any angle as long as it is within the range of the gravitational pull of the hill. However, the angle at which the rock approaches the hill can affect its trajectory and speed.
No, a rock may not always reach the top of a hill. The speed, angle, and mass of the rock, as well as the steepness and height of the hill, can all affect whether or not the rock will be able to overcome the gravitational pull and reach the top of the hill.
When a rock reaches the top of a hill, it will stop moving upwards and begin to roll or slide down the other side of the hill. This is because the gravitational pull is now pulling the rock in the opposite direction, towards the center of the Earth.