According to the graph below, what is the force being exerted on the 16-kg cart?

Question

anonymous · Answer

attachment

anonymous · Answer

@wolfe8 my messages aren't going through

wolfe8 · Answer

Hmm the site is acting weird for me too. Okay so you have a graph of velocity against time. Gradient, y over x will then be? And then can you use Newton's second law of motion, F = ma?

anonymous · Answer

y/x=2
16(2)-32?

wolfe8 · Answer

Well no... See on the graph, velocity is your y value and time is your x value. Do you see that? Well when you find the gradient of a graph you divide the change in y by the change in x, remember? So basically with this graph you will be doing the difference in speed divided by time, in other words the change in speed. And that is the definition of...

wolfe8 · Answer

Oh my bad I didn't see your first line. So you get 2, now what does that 2 represent, based on my explanation?

anonymous · Answer

Wait, how is it not 32 then?

wolfe8 · Answer

...Ok I'm sorry I am not thinking right. I guess I was hoping for you to go step by step instead of getting right to the answer. And your answer didn't look like the right answer. I'm guessing you meant to type 16(2) = 32 ? Yes that is the answer and do you know how to get that?

anonymous · Answer

yep! Thank you!