In a given frictionless displacement of a particle, its kinetic ...

[ashley]

In a given frictionless displacement of a particle, its kinetic energy increases by 25 J while its potential energy decreases by 10 J. Determine the work of the nonconservative forces acting on the particle during this displacement.
 a. -15 J
  b. +35 J
  c. +15 J
  d. -35 J
  e. +55 J

Question 2

A 2.0-kg block sliding on a rough horizontal surface is attached to one end of a horizontal spring (k = 250 N/m) which has its other end fixed. The block passes through the equilibrium position with a speed of 2.6 m/s and first comes to rest at a displacement of 0.20 m from equilibrium. What is the coefficient of kinetic friction between the block and the horizontal surface?
 a. 0.32
  b. 0.45
  c. 0.58
  d. 0.19
  e. 0.26

[rosiehomeworddo]

Answer to Question 1

C

Answer to Question 2

B

[ashley]

Thanks for the timely response, appreciate it

[Chelseyj.hasty]

Gracias!