Newtons first law of motion ( inertia )
Newtons first law of Motion (cont.)
Speed
Distance time graph
vocabulary
100
What is the definition for Newtons First Law of Motion?
An object at rest will stay at rest / an object in motion will remain in motion unless acted upon by an opposing force
100
What causes a change in motion?
Unbalanced forces
100
What is the formula for speed.
Distance/Time
100
How far did the bicyclist travel from 9:00 to 12:00?
60 km
100
The measure of how far something moves in a given amount of time.
Speed
200
What is inertia?
inertia is the tendency of an object to resist a change in its motion
200
What do you call something that has no change in motion?
Balanced force
200
A student runs 36 meters during lunch in 18 seconds. The average speed is
2 m/s
200
What does a slanted line in the middle of a speed/time graph represent
Constant speed
200
( fill in the blank ) ______ is speed with direction
velocity
300
What would it take to force the object to move?
An UNBALANCED, EXTERNAL force.
300
A soccer ball is kicked and rolls across a field. What eventually stops the ball?
an unbalanced force such as friction and air resistance
300
A space ship travels 320 meters in 2 seconds. The average speed is
160 m/s
300
What does a very steep line going up in a speed/time graph represent
acceleration
300
What is the difference between a balanced force and unbalanced force?
balanced forces are equal in strength and opposite in direction, resulting in zero net force and no change in an object's motion, while unbalanced forces are unequal, resulting in a net force and a change in an object's motion
400
the resistance that one surface or object encounters when moving over another.
Friction
400
An object is experiencing balanced forces, as shown below. In which direction will the object move?
The object will not move
400
How long will it take an object to go 60 miles if it is traveling at 40 miles per hour
1.5 hours
400
What a straight line at the bottom of a speed/time graph represents
Object at rest or no movement
400
What is the definition of acceleration.
It is the rate of change of velocity
500
What will happen to a ball rolling on the ground if no additional forces act upon it?
It will keep rolling at the same speed forever.
500
A 17-newton (17 N) force and a 25-newton (25 N) force are applied to a wagon at the same point in opposite directions. What would be the effect of these forces?
The wagon will move in the direction of the 25 N force
500
A deer runs 10mph north into the woods away from the hunters. speed or velocity... why
What is velocity... includes direction
500
What does a slanted line going down in a speed/time graph represent
deceleration
500
What is the difference between velocity and acceleration?
Velocity describes how position changes; acceleration describes how velocity changes.