Motion
True or False: Velocity is a vector
True
On a displacement vs time graph, what does the slope reresent?
The velocity
What are the units for velocity?
m/s
A runner is sprinting at 10 m/s, she sprints for 14 seconds, how far does she run?
140 meters
A quantity takes into consideration the magnitude (size) and the direction
What is a vector
On a d vs t graph, if the line is a straight and goes diagonal, what does that mean?
The velocity is constant
What are the units for distance/displacement?
meters (m)
What does vf stand for in a kinematics equation?
final velocity
A quantity that only considers magnitude (size)
what is a scalar
(D vs t graph) If an object stops for a period of time, what does that say about the velocity?
The velocity is 0 m/s
What are the MOST USED units for time in Kinematics
seconds (s)
A boy sledding down a slide has an initial speed of +3m/s. He continues to speed up and reaches a final velocity of +5m/s after traveling for 5 seconds. What distance does the boy travel.
What does a positive velocity tell you about the direction?
What is going up/to the right/North
In a velocity vs time graph, what does the slope represent?
acceleration
What are the units for acceleration
m/s^2
When completing problems with distance, velocity, and time, what are you probably trying to solve for?
acceleration
On a motion diagram, what does it mean for the arrows to be the same size?
The speed is constant
On a velocity vs time graph, if the line is horizontal, what does that mean?
The velocity is constant (no acceleration)
What happens when you multiply acceleration and time?
You get velocity or (m/s)
A dog is moving at 15 m/s when it accelerates at 2 m/s^2 for 3 seconds, what is his new velocity?
use vf= vi+at
21 m/s