Show:
Measuring Motion
Forces
Speed
Giver and Receiver
Opposing Motion
100
An object that appears to stay in place.
What is a reference point.
100
any push or pull
What is force.
100
Total distance divided by total time
What is Average Speed
100
These forces produce a change in motion
What are unbalanced forces
100
a force that opposes motion between two surfaces that are touching.
What is friction
200
an object's change in position over time when cmpared with a reference point
What is motion
200
the SI unit of force.
What is a newton.
200
If you walk for 1.5 hours and travel 7.5 kilometers, what is your average speed?
What is 5 kilometers per hour.
200
Joe is pushing the piano with 23 newtons and Daniel is pushing in the the same direction with 21 newtons. What is the net force?
What is 34 newtons
200
a force of attraction between objects that is due to their masses and proximity.
What is gravity
300
the rate at which an object moves.
What is speed.
300
the force that results from combining all the forces exerted on an object.
What is the net force.
300
A bird flies at a speed of 15 meters per second for 10 seconds. How far did it fly.
What is 150 meters
300
Who wins? Chua, Padraig and Hunter are in a tug of war with Glenn, Owen and Joey. Chua's team pulls one direction with a force of 56 newtons and Glenn's team pulls the other direction with 63 newtons. What is the net force?
Glenn's team wins and the net force is 7 newtons.
300
This describes the relationships between gravitational force, mass and distance
What is the Law of Universal Gravitation
400
the speed of an object in a particular direction.
What is velocity.
400
Forces are measured in ____________
What is newtons.
400
Which is an example of velocity? A. 25 m/s forward B. 1,500 km/h
What is (A) 25 m/s forward
400
These forces are necessary to cause a non moving object to start moving.
What are unbalanced forces.
400
You use this type of friction when you go sledding.
What is sliding friction
500
the rate at which velocity changes.
What is acceleration
500
These forces produce no change in motion.
What are balanced forces.
500
Time and distance
What are the two things you must know to determine speed?
500
A hat resting on your head is an example of
What is an object with balanced forces acting on it.
500
this force occurs when force is applied to an object but the object does not move.
What is static friction.