Abicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.63 m/s. four seconds later, the bicyclist hops on his bike and accelerates at 2.11 m/s2 until he catches his friend. a. how much time does it take until he catches his friend? (b) how far has he traveled in this time? (c) what is his speed when he catches up?

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)