15 5-A child releases a balloon at a park. The balloon travels up into the air 9 m, and east across the park a distance

of 20 m, before getting stuck in a tree. What is the resultant displacement of the balloon? Express your answer in

components, and then determine the magnitude.

ANSWER

Q X, X

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1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

What kind of simple machine is a catapult?