2 cars drive at the same velocity but one of them has twice the mass as the other. Is the mechanical kinetic energy of the larger car 2, 3 , or 4 times that of the smaller car? Please include formula and clear explanation.

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.