Author Question: The position x, in meters, of an object is given by the equation x = A + Bt + Ct2, where t ... (Read 19 times)

amal · **on:** Jul 29, 2018

The position x, in meters, of an object is given by the equation x = A + Bt + Ct2, where t represents time in seconds. What are the SI units of A, B, and C?

A) m, s, s2
B) m/s, m/s2, m/s3
C) m, s, s
D) m, m, m
E) m, m/s, m/s2

Question 2

A 7.0-kg rock is subject to a variable force given by the equation
F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2
If the rock initially is at rest at the origin, find its speed when it has moved 9.0 m.

What will be an ideal response?