3051

Physics Work,Power & Energy Level: High School

Conservation of Energy

An 8.0 kg block is released from rest, v1 = 0 m/s, on a rough incline . The block moves a distance of 1.6 m down the incline , in a time interval of 0.80 s , and acquires a velocity of v2 = 4.0 m/s . In the figure which is shown at “click here”, the work done by the weight is closed to :

a) +80]

1

b) +100]

c) +120]

d) -80]

e) -100]