If Earth was like a hardboiled egg, which part of Earth would the egg shell represent and why? Crust, as its depth is up to 3000 kilometers
Mantle, as its depth is up to 3000 kilometers
Mantle, as its depth is less than 100 kilometers
Crust, as its depth is less than 100 kilometers

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