In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force is applied horizontally to the crate.As the force pushes the crate a distance of up the incline,the speed changes from 1.40 m/s to 2.50 m/s.How much work does gravity do on the crate during this process?
A) -10,300 J
B) -3400 J
C) +10,300 J
D) +3400 J
E) zero

Question

In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force  is applied horizontally to the crate.As the force pushes the crate a distance of  up the incline,the speed changes from 1.40 m/s to 2.50 m/s.How much work does gravity do on the crate during this process? 
A) -10,300 J 
B) -3400 J 
C) +10,300 J 
D) +3400 J 
E) zero

Quizplus · Accepted Answer

The Answer of In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force  is applied horizontally to the crate.As the force pushes the crate a distance of  up the incline,the speed changes from 1.40 m/s to 2.50 m/s.How much work does gravity do on the crate during this process? 
A) -10,300 J 
B) -3400 J 
C) +10,300 J 
D) +3400 J 
E) zero

In the Figure,a 700-Kg Crate Is on a Rough Surface