Speed/Velocity
Steven Gerrard (the great Liverpool soccer player) kicks a soccer ball 100 meters in 2 seconds, maintaining this average speed.
What is 50 m/s?
An explanation of the forces in a tug of war when the rope is not moving.
What is... the forces are balanced?
The law that explains why a person on a skateboard continues to move forward if the skateboard suddenly stops after hitting a rock.
What is Newton's first law?
A basketball hit with a mallet travels faster than a bowling ball hit with the same force is an example of this law.
What is Newton's second law?
The scientist who developed the laws of motion.
Who is Sir Isaac Newton?
Speed with direction.
What is velocity?
Earth's acceleration due to gravity is always 9.8 m/s2...What explains why a feather takes longer to fall than a bowling ball?
What is fluid friction (air resistance)?
A stationary ball being kicked is an example of this law.
What is Newton's first law?
This can be calculated by knowing an object's mass and the forces acting on the object.
What is an object's acceleration?
According to Newton's 3rd law, all actions and reactions must be these TWO things.
What is equal and opposite?
On a distance vs. time graph this determines speed.
What is slope?
This can be said about the forces of a shark traveling in space at a constant velocity.
What is... the forces are balanced or net force=0?
The coin on the cup best demonstrates this law.
What is Newton's 1st law?
Gravity depends on distance and this.
What is the mass?
Forces from ropes and springs.
What are tension and compression?
Usain Bolt can sprint 25m/s for 10 seconds, so he can travel this far.
What is 250 meters?
The total amount of force acting on an object.
What is net force?
Thicker treads/soles on your shoes increases this.
What is friction?
I multiply the mass of something (in kg) by 9.8 to get the weight in Newtons because 9.8 is this.
What is the force due to gravity?
This force opposite gravity.
What is normal force?
This acceleration determines weight on Earth.
What is the acceleration due to gravity?
Vectors show these TWO things.
What is magnitude and direction?
This force is universal and explains why a bowling ball and a feather fall at the same rate.
What is gravity?
This causes acceleration and this resists acceleration. (2 answers)
What is force and mass?
This can be harmful and helpful.
What is friction?