Velocity vs. Time 25
20
15
Velocity (m/s)
10
5
0
0
1.0 2.0 3.0
4.0 5.0 6.0 7.0 8.0 9.0 10.0
Time (s)

(c) Identify the physical quantity represented by the shaded area on the graph. Justify
your reasoning.

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

What is an aquifer for science class

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".