You throw your English book DOWNWARD at 15 m/s off the roof of a building. If your book is in the air for a total of 0.514 seconds, how many
meters did it fall before hitting the ground? Ignore air resistance.

Aparticle moves according to a law of motion s = f(t), 0 ≤ t ≤ 12, where t is measured in seconds and s in feet. f(t) = cos(πt/6) (a) find the velocity at time t (in ft/s).

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

Which word expression describes how much to calculate pressure