The figure above shows the graph of the velocity of a moving object as a function of time. At which point is the speed the greatest?
I would think B since its a relative max and velocity=speed , however a friend told me something that is making me second guess my answer
We can baby-talk our way through this.
The figure above shows the graph of the velocity of a moving object as a function of time.
At which point is the speed the greatest?
. . I'll make up some numbers . . .
At , the velocity is +2.
The object is moving to the right at 2 ft/sec.
At , the velocity is +3.
The object was speeding up and is now moving to the right at 3 ft/sec.
Then the object slows down
and at it has completely stopped (velocity = 0).
Then the object moves to the left (negative velocity)
and speeds up until point , where the velocity is, say, -6 ft/sec.
Then it slows down until point where it is moving at only -1 ft/sec,
still moving to the left.
Since , the maximum speed is at point