Author Question: The position, x, of an object is given by the equation x = A + Bt +Ct2, where t refers to time. What ... (Read 55 times)

Medesa · **on:** Jul 27, 2018

The position, x, of an object is given by the equation x = A + Bt +Ct2, where t refers to time. What are the dimensions of A, B, and C?

A) distance, distance, distance
B) time, time, time
C) distance, time, time2
D) distance, distance/time, distance/time2
E) distance/time, distance/time2, distance/time3

Question 2

A car of mass M, traveling with a velocity V, strikes a parked station wagon, whose mass is 2M. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?

A) 1/4
B) 1/9
C) 1/2
D) 2/3
E) 1/3