v2
so v2 isn't zero in this case. i was supposing that v2 will be 0, when the ball hits the ground. So how would you proceed with this problem further?
A basketball player shoots a ball at an angle of 60 with an initial velocity of 7.0 m/s. The ball was 2.0m above the ground when released and the basket was 3.00m high. How long was the ball in the air?
Here is what i did so far:
y-axis...
parabolic reflector
ic.. but where should i position the parabolic reflector, since i can't do anything to the lamp given in this experiment.
-as i understand I am supposed to build some kinda box that will attract as much heat as possible in order to heat the water.
The purpose of this experiment is to construct an energy-collecting apparatus to concentrate as much energy from a provided 250 Watt heat lamp as possible. This energy is to be used to heat a mass of water. (the water will be given at a fixed temperature in a 35 mm film canister).
The heat...