A person on a trampoline bounces straight upward with an initial speed of 4. 5 m/s. What is the person’s speed when she returns to her initial height?.

What is the length x of the side of the triangle below? (hint: use the cosine function)

What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.