A ball is thrown horizontally from a 20-m-high building with a speed of 5.0m/s a. make a sketch of the ball's trajectory.
b. Draw a graph of Vy, the horizontally velocity, as the a function of time. include units on both axes
c. Draw a graph of Vy, the vertical velocity, as the a function of time. include units on both axes
d. How far form the base of the building does the ball hit the ground

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star