Abowling ball has a mass of 6 kg. what happens to its momentum when its speed increases from 2 m/s to 4 m/s?
a) the initial momentum is 6 kg*m/s, and the final momentum is 3 kg*m/s
b) the initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s
c) the initial momentum is 12 kg*m/s, and the final momentum is 3 kg*m/s
d) the inital momentum is 6 kg*m/s, and the final momentum is 12 kg*m/s

Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain

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

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?