Show:
Velocity and Acceleration
Forces
Gravity
Newton's First and Second Laws
Newton's Third Law
100
A measure of speed and direction.
What is velocity?
100
A push or a pull.
What is a force?
100
The parabolic airplane simulates anti-gravity because of this. (remember Mr. G's demonstration)
What is decending at the same acceleration as gravity?
100
The tendency of an object to resist change in its motion.
What is inertia?
100
Newton's third law is often referred to as this.
What is action/reaction?
200
This is one way to increase acceleration.
What is decreasing mass?
200
The force that one surface exerts on another when the two rub against each other.
What is friction?
200
When the only force acting on a falling object is gravity, the object is said to be in this.
What is free fall?
200
This factor increases inertia.
What is mass?
200
This is what Newton's third law states.
What is for every action, there is an equal and opposite reaction?
300
To determine the acceleration of an object, you must calculate the change in speed during each unit of this?
What is time?
300
Unbalanced forces acting on an object change the object's ________.
What is motion?
300
The force of gravity causes all objects to fall at this acceleration.
What is 9.8 m/s2
300
Objects have inertia when they are doing this.
What are moving and standing still.
300
According to Newton's third law, this happens when a hammer strikes and exerts force on a nail.
What is the nail exerts an equal and opposite force on the hammer?
400
The statement that the motion of a hurricane is 20 km per hour in an easterly direction is a description of this.
What is velocity?
400
Balanced forces acting on an object do this.
What is never change the object's motion?
400
The force of gravity between you and earth is greater than the force of gravity between you and a car because of this.
What is Earth has more mass?
400
Newton's second law states this.
What is F=ma (force= mass x acceleration)
400
The product of an objects mass and velocity is called this.
What is momentum?
500
Because of this, the moon is constantly accelerating.
What is continuously changing direction?
500
These two factors can increase friction.
What are more mass and rougher surface?
500
These two factors increase the force of gravity
What are increasing mass and decreasing distance?
500
A dropped ball with a mass of 12 kg accelerates to Earth at a rate of 9.8 m/s2. What is the force on the ball?
What is 117.6 N?
500
Unless this happens, the total momentum of a group of objects is conserved.
What is outside forces acto on the objects?