The motion of an electron is given by x(t)=pt3+qt2+r, with p = -2.3 m/s^3 ,q = +1.5 m/s^2 , and r = +9.0 m. a) determine its velocity at t=0.b) determine its velocity at t=1s. c) determine its velocity at t=2s. d) determine its velocity at t=3s.

Explanation:

Instant Velocity

Given the position as a function of time x(t), the instant velocity is the derivative of the function:

We are given the position as

The derivative of x is

A) Let's compute v(0)

B)  

C)

D)

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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