Finger
Define velocity.
Speed with a direction.
What causes a change in velocity?
Direction
While traveling in a car, why do cars that pass by appear to be moving slowly?
They are going in the same direction, vs. going in the opposite direction.
What term refers to the product of an object's mass and velocity?
Momentum
How can velocity change even if speed stays the same?
You change the direction.
The amount of matter in an object.
Mass
The speed of an object and the direction of its motion.
Velocity
The rate of change of a position at a given point in time.
Instantaneous Speed
The distance and direction of an object from point A to point B.
Displacement
The total distance an object covers divided by the total time an object took to travel.
Average Speed
An object that is neither speeding up nor slowing down
travels at a ______.
constant speed
A graph with distance on the vertical axis and time
on the horizontal axis is called a______.
distance-time graph
When an object is accelerating, its speed is ______.
changing
any change over time
rate
An object slowing down has a ____________________ acceleration.
negative
A bird flying north with a mass of 2.5 kg has a momentum of 17.5 kg per m/s. At what velocity is it flying? (hint: divide)
7 m/s
A car with a mass of 1,400 kg is traveling at a speed of 40 m/s. What is its momentum?
56,000 kg per m/s
The equation s = d/t is used to calculate the ____________________ of an object.
speed
In the equation s = d/t, d stands for ____________________.
distance
In the equation used to calculate acceleration, vi stands for ____________________ and vf
stands for ____________________.
inital velocity and final velocity
A car approaching a red traffic light has a ____________________ acceleration; when the
light turns green, the car’s acceleration is ____________________
negative, positive
A freight train has more ____________________ than a car, so it has greater momentum.
mass
A science book is moved once around the perimeter of a table for 5 m, then 2 m.
If the book ends up at its original position,
what is its distance traveled?
7 m
A science book is moved once around the perimeter of a table for 5 m, then 2 m.
If the book ends up at its original position,
what is its displacement?
0 m
A person walking covers 5.20 m in 10.4 s. How fast is the person moving?
0.5 m/s