Vocab
Motion is a change in
Position
The speed you read on a speedometer
instantaneous speed
What would a position v time graph look like for a person standing still
Horizontal line above the x axis
If you ride your bicycle down a straight road for 500 m then turn around and ride 200 m back, what is your distance?
A car travels 750m in 25s. What is the car’s speed?
30 m/s
how far you've traveled
Distance
3 m/s North is an example of
Velocity
What would a velocity v time graph look like for a person standing still?
A horizontal line on the x axis
A person travels 200m north on a hiking trail and decides they want to head back to their vehicle. In the process of heading back they get lost and walk 400 m south. What is their displacement?
200 m south
A motorcycle travels at 40km/hr. How long does it take the motorcycle to travel 10 km?
4 hours
change in position (distance and direction)
displacement
3 m/s is an an example of
Speed
A horizontal line on a velocity vs. time graph shows _____ acceleration.
Zero
An object has a force of 45 N pulling it to the East, while being pushed 55 N to the west. What is it's net force?
10 N West
An airplane starts from rest and reaches 80m/s in 20s. Find the Acceleration of the plane
4 m/s^2
Newton's first law of motion is also called the law of
inertia
3m/s^2 is an example of
Acceleration
The slope of a velocity vs time graph shows
Acceleration
An object is being pushed 73 N north and being pulled 75 N south, what is its net force?
2 N South
A skateboarder traveling 3m/s comes to a stop in 2s. Find the acceleration of the skateboarder.
-1.5 m/s^2
Acceleration is rate of change of
Velocity
“An object at rest remains at rest and an object in motion remains in motion unless acted upon by a net force” is known as which of Newton’s Laws?
1st
The slope of a position vs time graph shows
Average velocity
An eagle flies north for 75 m before spotting it's lunch. Lunch is moving south, so the eagle turns around and follows it 30 m south. Lunch notices it's being followed and changes direction and runs 75 m north, the eagle follows. What is the eagles total distance?
Distance is 180 M
A person speeds up from 2m/s to 10 m/s at a rate of 3m/s^2. How long does it take?
2.67 seconds