Show:
Vocabulary
Calculation
Force
Speed & Velocity
Acceleration
100
any push or pull on an object
What is force
100
this is the speed of a runner who travels 15km in 0.75 hours
What is 20 km/h
100
the formula for force
What is mass times acceleration
100
velocity includes speed and THIS
What is direction
100
acceleration is a change in THIS quantity over time
What is velocity
200
distance over time
What is speed
200
the distance traveled by a train in 2 hours if it is going 250km/h
What is 500km
200
the formula for finding the force of gravity
What is mass * 9.8m/s2
200
Speed equals ___________ divided by __________
What is distance divided by time
200
The acceleration due to gravity
What is 9.8m/s2
300
a change in velocity over time
What is acceleration
300
The displacement of a dog that chases a rabbit 100m west, then chases a bird 75m back east.
What is 25m west
300
_____________________ forces keep an object at rest
What is balanced
300
a car at a constant speed on an oval track has ___________ velocity
What is changing
300
Acceleration has THIS VALUE when an object is speeding up
What is positive
400
an object in motion stays in motion; an object at rest stays at rest
What is inertia
400
the acceleration of a car that speeds from 32m/s to 96m/s in 8.0 seconds
What is 8m/s2
400
This is the sum of all forces acting on an object
What is net force
400
speed can be found using the slope of THIS type of graph
What is distance-time graph
400
Acceleration has THIS VALUE when velocity remains constant
What is zero
500
when an object has equal forces acting in OPPOSITE directions
What are balanced forces
500
the acceleration of a runner beginning a race: 6 seconds after the starting gun, the runner is traveling at 15m/s
What is 2.5m/s2
500
_______________ forces create motion
What is unbalanced
500
at the same speed a bowling ball is harder to stop than a basketball because of this
What is inertia
500
acceleration is ALWAYS measured in THIS unit
What is meters per seconds squared