A 20-kg object is resting at the top of a table 1.6 m above ...

[ishan]

A 20-kg object is resting at the top of a table 1.6 m above ground level. The object is then picked up and moved to a height of 8.7 m above ground level. What is the change in the gravitational potential energy of this object? Use g = 10 m/s2.
 
  A) 71 J
  B) 140 J
  C) 1740 J
  D) 320 J
  E) 1420 J

Question 2

The slope of a line connecting two points on a velocity versus time graph gives
 
  A) displacement.
  B) instantaneous velocity.
  C) average velocity.
  D) instantaneous acceleration.
  E) average acceleration.

[atrochim]

Answer to Question 1

E

Answer to Question 2

E

[ishan]

Thank you!

[atrochim]

Always glad to help...