The velocity v(t) of a particle as a function of time is given by ...

[laurencescou]

The velocity v(t) of a particle as a function of time is given by v(t) = (2.3 m/s) + (4.1 m/s2)t - (6.2 m/s3)t2. What is the average acceleration of the particle between t = 1.0 s and t = 2.0 s?
 
  A) -15 m/s2 B) 0 m/s2 C) 13 m/s2 D) 15 m/s2 E) -13 m/s2

Question 2

Most of the following energy resources provide useful energy in the United States today. Which one does not?
 
  A) direct solar
  B) geothermal
  C) nuclear fusion
  D) biomass
  E) nuclear fission

[spencer.martell]

Answer to Question 1

A

Answer to Question 2

C

[laurencescou]

Gracias!

[raili21]

Excellent