As an object of mass 60 kg approaches the bottom of a ramp, point ...

[elizabeth18]

As an object of mass 60 kg approaches the bottom of a ramp, point A, its speed is 20 m/s. It goes up the frictionless plane and turns around at point B. What is the potential energy of this object at point B? Use g = 10 m/s2.
 
  A) 0 J
  B) 6.0  103 J
  C) 9  103 J
  D) 12  103 J
  E) 18  103 J

Question 2

During the time that the acceleration of a particle is constant, its velocity-vs.-time curve is
 
  A) a straight line.
  B) a parabola opening downward.
  C) a parabola opening upward.
  D) a parabola opening toward the left.
  E) a parabola opening toward the right.

[chjcharjto14]

Answer to Question 1

D

Answer to Question 2

A

[elizabeth18]

TY

[chjcharjto14]

You're welcome