Agolf ball rolls off a horizontal cliff with an initial speed of 11.4 m/s. the ball falls a vertical distance of 17.7 m into a lake below. (a) how much time does the ball spend in the air? (b) what is the speed v of the ball just before it strikes the water?

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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?