True or False What a graph of velocity vs time tells us about force

[idllotsaroms]

Homework Statement

http://postimage.org/image/qj7owwxcb/

The graph below shows the velocity of an object of mass 1 g. Each line on the time axis represents 3 s and each line on the velocity axis represents 2 m/s. Which of the following statements, describing the graph above are true?
A) In section D, the displacement is negative.
B) In section D, the force changes but the sign remains constant.
C) In section C, the force is positive.
D) In section C, the force is constant and non-zero.
E) In section A, the force acts in the direction of the velocity

Homework Equations

Newton's Second Law

The Attempt at a Solution

A False, still in the positive direction since velocity was just decreased but not negative
B False, the force changes sign
C True, velocity is increasing, acceleration is greater than 0 so F = ma is greater than 0
D True, same reason as C
E True, since acceleration is changing

 

[astarael7]

What graph?

 

[idllotsaroms]

What graph?

I fixed the URL

 

[astarael7]

Your answers seem correct to me.

 

[idllotsaroms]

Your answers seem correct to me.

Thanks for checking me astarael!