In Sample Problems 4.2 item 2, find the speed of the object at,

A) x = 2.0 m
B) x = 3.0 m
C) x = 4.0 m

Assume that the mass of the object is 2.5 kg and that the object starts from rest.

Given:
m = 2.5 kg
v↓0 = 0
W = 25 J

1 answer

A) x = 2.0 m:
v = √(2W/m) = √(2*25/2.5) = 5 m/s

B) x = 3.0 m:
v = √(2W/m) = √(2*25/2.5) = 5 m/s

C) x = 4.0 m:
v = √(2W/m) = √(2*25/2.5) = 5 m/s