Newton's First Law
This states that an object at rest will remain at rest and an object in motion will remain in constant motion unless an external force acts on the object
What is Newton's First Law
This is a push or a pull
What is Force
Newton's third law involves these 2 forces
What is the action force and the reaction force
How do you calculate the weight of an object
What is weight= mass times the acceleration of gravity (9.8 m/s2)
Weight=m*ag
This is the net force on a racecar with a mass of 1200 kg if its acceleration is 40 m/s2
What is 48,000 N
The combination of all forces acting on an object
What is the net force
This is the force that opposes the force of gravity when an object is falling through the air
What is air resistance
True or False?
All forces acting on an object come in equal pairs.
True.
This is the gravitational force exerted on an object
What is weight
This is the force on a skydiver with a mass of 90 kg (assume there is no air resistance)
What is 882 N
This is also known as the law of inertia?
What is Newton's First Law?
When I divide force by acceleration it will equal this
What is mass
A rocket's exhaust pushes down on the Earth and the Rocket lifts off into the atmosphere. This is an example of...
What is action/reaction force pairs
This is an attractive force between any two objects that depends on the masses of the objects and the square of the distance between them
What is gravity
This is the force of a football player with a mass of 80 kg and an acceleration of 5 m/s2
What is 400 kg m/s2 or 400N
This is the force that opposes the motion of two surfaces that are touching each other
What is friction
You slide down a playground slide, but you don't quite reach the bottom of the slide. What is most likely the FORCE that stops you?
What is friction.
Why can't you move forward on a frictionless surface?
Without the opposite force of friction, there is no way for the force applied by your leg to the ground to push you forward?
True or False
Gravity is a universal force
True
A car is being pulled by a tow truck. What is the car's mass if the net force on the car is 6,000 N and it has an acceleration of 3.0 m/s2?
What is 2,000 kg
The resistance to change
What is inertia
State Newton's Second Law
What is when one object with mass exerts a force on a second object with mass, the second object will accelerate in the direction of the net force.
If the mass of a moving object increases, what would have to happen to the force applied to that object to keep it moving sat the same velocity
The force would have to increase to move it at the same velocity
Explain why weight and mass are not the same
What is weight is dependent upon gravity and measured in Newtons and mass is not dependent on gravity and is measured in kilograms
This is the mass of a person who weighs 1000 N. Round your answer to 2 decimal places.
What is 102.04 kg