What would take more work: a 10 kg bowling ball lifted 1 meter off the ground, or a 1 kg laptop lifted 10 meter off the ground? Explain how you arrived at your answer. PLEASE HELP 50 POINT

The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

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