Two dragsters start from rest from the same location with the dragster a leaves 2 seconds before the dragster b. dragster a is accelerating at a constant rate of 12 m/s^2 and dragster b accelerates at 16 m/s^2 .a) at what time the b catch a? b) how far down the track does this happen? c) how fast is dragster a travelling when it gets caught? d) how fast is dragster b travelling when it catches dragster a? graph the motion of both vehicles (d vs. t, v vs. t, & a vs. t for each vehicle)

What is the measurement of how fast an object moves relative to a reference point?

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.