Stellar Speed
What is the formula for speed?
Speed= Distance / Time
What is the formula for velocity?
Velocity= distance / time
WITH A DIRECTION
What is the formula for acceleration?
Acceleration= Final Velocity - Initial Velocity / time
What formula is m/s an example unit?
speed or average speed
an object in motion wants to stay in motion and an object at rest wants to stay at rest unless acted upon by an unbalanced force
What is: Newton's First Law
How is speed different from velocity?
Velocity needs a direction
What is the velocity of an object that is moving 6 meters in 2 seconds east?
3 m/s east
What are three ways we can tell if something is accelerating?
speeding up, slowing down, changing direction
What is m/s2 a possible unit for?
acceleration
Objects are LAZY! This is the term used for the natural tendency of objects to keep on doing what they're doing.
What is: Inertia
What is the average speed of a cow that walks 60 meters east in 90 seconds? (Remember, the units must be m/s)
0.7 m/s
OR
0.66 m/s
Distance= 20 meters
Time= 4 seconds
Direction= South
What is the velocity of this object?
5 m/s south
Vf= 60 m/s south
Vi= 50 m/s south
Time= 5 seconds
What is the acceleration? (Remember to include the right units m/s2 and direction)
2 m/s2 south
Which formula must have a direction in order for it to be complete?
Velocity
Force= Mass x Acceleration
What is: Newton's 2nd Law of Motion
A porcupine moved toward a pond at a speed of 5m/s. It took him 8 seconds. What is the distance he traveled?
40 meters
An object travels 25 meters in 2 seconds east. What is it's velocity?
12.5 m/s east
What is the term used to describe motion that is slowing down over time?
Deceleration
For what formula would mi/hr east be a possible unit?
An object will _______________ in the direction that you apply a force.
What is: accelerate
What is the speed for an object moving at a velocity of 105.3 m/s east for 6 seconds?
105.3 m/s
Distance= 40 meters
Time= 2 minutes
direction= North
What is the velocity in m/s?
0.33 m/s north
How does mass affect acceleration?
The more massive something is, the smaller the acceleration. Objects with smaller masses usually accelerate faster.
What formula would we use if we wanted to find out how an object's velocity changed within a certain period of time?
Acceleration
A baseball hit with a wooden bat goes farther than a baseball hit with a plastic bat. This is an example of which law of motion?
What is: Newton's 2nd Law