Forces 1
The man responsible for the Laws of Motion
Who is Isaac Newton?
the rate of change of velocity
What is Acceleration?
The m in the equation F=ma represents
What is Mass?
The amount of force acted on a golf ball (0.2 kg) if it accelerates at a rate of 20 m/s2
What is 4 N?
The sum of all forces acting on an object
What is Net force?
This force that opposes the sliding motion two surfaces
Friction
The speed of an object that travels 90 meters in 3 seconds
What is 30 m/s?
The mass of an object with a force of 52N if it moves with an acceleration of 4 m/s2
What is 13 kg?
The force that keeps Earth in orbit
What is gravity
The net force acting on an object with constant velocity
What is 0 N?
What causes friction?
micro welds
The equation of Newton's Second Law of Motion
What is F= ma?
The unit of measure for force
What is Newton?
The d in the speed equation s=d/t represents
What is Distance?
The acceleration of a 100 g box if you apply a net force of 3N
What is 30 m/s2?
Forces acting on an object that causes the object to move
What are Unbalanced Forces?
The tendency of an object to resist any change in its motion is what?
Inertia
Two students push on a box in the same direction, and one student pushes in the opposite direction. What is the net force on the box if each student pushes with a force of 40 N?
Which law states: for every action, there is an equal and opposite reaction
Newton's Third Law of Motion
What are the forces called that act on an object but does not cause the object to move
What are Balanced Forces?
The number for acceleration due to gravity on Earth
What is 9.8 m/s2?
On Earth, what is the weight of a large screen TV that has a mass of 75 kg?
Fg = mg
75kg x 9.8 N/kg = 735N
You multiply mass by this to find gravity
What is gravitational acceleration
The unit for acceleration
Two things a moving object depends on
What is Mass and Speed?