Speed/Velocity
Steven Gerrard (the great Liverpool soccer player) kicks a soccer ball that travels 100 meters in 2 seconds, maintaining this average speed.
What is 50 m/s?
A description of the forces in a tug of war when the rope is not moving.
What are balanced forces?
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 or the Law of Inertia?
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?
Force is measured with this unit in the metric system.
What are Newtons?
A stationary ball that only moves after being kicked is an example of this law.
What is Newton's first law?
This is determined by 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 line graph this can be used to determine the speed.
What is the slope of the line?
This can be said about the forces acting on a shark traveling at a constant velocity.
What is the forces are balanced or in equilibrium?
The coin on the cup trick best demonstrates this law.
What is Newton's 1st law?
The type of friction felt by a sky diver as they fall through the air.
What is fluid friction?
Forces that cause a change in the motion of an object.
What are unbalanced forces?
Usain Bolt sprinted 25m/s for 10 seconds. He will travel this far.
What is 250 meters?
The total amount of force acting on an object.
What is net force?
Thicker tread on your shoes increases this.
What is friction?
When an object speeds up, slows down or turns.
What is acceleration?
The force that opposes gravity.
What is normal force?
This acceleration determines weight on Earth.
What is the acceleration due to gravity?
Vectors show these TWO things.
What are magnitude and direction?
This force is universal and explains why a bowling ball and a feather fall at the same rate in a vacuum.
What is gravity?
___________ causes acceleration and ________ resists acceleration. (2 answers)
What is force and mass/friction/inertia?
The two factors that affect the amount of friction between two objects.
What are the textures of the objects and the amount of force pushing them together?