Question

calc problem!

Answer 1

number 3?

Answer 2

For to find the times when "particle is moving right" is equivalent to finding the intervals where v(t)>0. Do you know how to do that?

Answer 3

im not sure, can you explain like the last problem?

Answer 4

This is approximately the velocity time graph v(t).

Answer 5

If v(t)>0, is it moving right or left?

Answer 6

right?

Answer 7

Good, and if v(t)<0, is it moving right or left?

Answer 8

left?

Answer 9

Good, last one: when v(t)=0, is it moving right or left?

Answer 10

im not sure..

Answer 11

haha, I just gave you a tricky question!
It's not moving, period! Agree?

Answer 12

So when v(t)=0, it's moving neither left nor right!

Answer 13

haha yes

Answer 14

Now, on the graph/sketch I drew, can you identify the region where v(t)>0.
Mark on it!

Answer 15

wait what, how do i find that

Answer 16

The graph is a velocity time graph.
The area above the x-axis is the area where v(t)>0,
and that below means v(t)<0.

Answer 17

ohh i didnt know what you meant, now i got it

Answer 18

And the question wants
"the time interval(s) when the particle is moving right".

Answer 19

Here I have shaded the regions where v(t)>0, which means...