This man developed the laws of motion in the 1600s
What is Issac Newton
100
Unit for force.
What is Newton.
100
A force that occurs between surfaces that are in contact with each other.
What is friction.
100
The tendency of an object to remain at rest or in motion.
What is inertia
100
kg and m/s/s
What is the units for mass and acceleration.
200
a push or a pull
What is a force
200
The formula for force
What is Force= mass x acceleration.
200
Metal balls that are inserted in skateboards in order to reduce friction.
What is ball bearings.
200
An object in motion tends to stay in motion and an object at rest tends to stay at rest.
What is Newton's 1st Law of Motion.
200
What kind of mass must a moving object have if a large force is required to move it.
What is large.
300
Friction allows a basketball player to do this.
What is change direction quickly.
300
What is applied to an object in motion to stop it.
What is outside force.
300
This is used in cars to reduce friction and prevent overheating.
What is oil.
300
A moving car and a rolling ball.
What is an object in motion.
300
An object begins to move, speed up, slow down, come to a stop, or change direction only when some force acts on that object.
What is Newton's 2nd Law of Motion.
400
Increasing friction allows your speed to change in this way.
What is decrease.
400
In order to move an object with a lot of mass __________ force would be needed to move it.
What is more.
400
This type of surface creates more friction.
What is smooth
400
A measure of a body's inertia.
What is mass.
400
This type of force causes greater acceleration in a lighter object.
What is a constant force.
500
This increases the friction between the tire and the road.
What is tread.
500
A car has a mass of 200 kg and is accelerating at 5m/s/s. This amount of force is needed.
What is 1000N.
500
A car slipping on an icy surface is an example of this
What is a loss of friction
500
Name 4 developments that scientists have installed in cars to keep drivers and passengers.
What are seat belts, air bags, shoulder bags, and head restraints.
500
This prediction can be made about the force needed for a baseball pitcher to accelerate a ball at a rate of 5 m/s/s
compared to the force needed to accelerate the same ball at a rate of 15 m/s/s.
What is it would take three times as much force to throw the ball at 15 m/s/s than it would at 5 m/s/s.