Which of the following scenarios depicts work being done? (mark all correct answers) Group of answer choices

A person applies force to a couch, which stays in the same spot, until they are exhausted

Friction slows down a moving skateboard

A person applies force to a couch, moving it across the room

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

The process of predicting values that extend beyond the range of data points is called absolute value extrapolation interpolation prediction for any given: )

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s