If a scale is calibrated to be measured in Newtons, what would a 5 kg watermelon read on the scale?
What is 49 N
100
The force exerted by a fluid on an object opposing motion through the fluid
What is drag force
100
Which one of Newton’s laws of motion state that acceleration of an object is proportional to the net force and inversely proportional to the mass of the object being accelerated?
What is Newton's second law?
100
A push or a pull is called a _______.
What is force?
200
What unit represents the magnitude a force is measured in?
What is Newtons?
200
Will your apparent weight be less than or greater than your actual weight when going down in an elevator?
What is less than
200
As the speed of an object increases, the magnitude of the drag force _______
What is increases
200
What is the formula of Newton’s second law?
What is a = Fnet/mass?
200
What is another term for the vector sum of all the forces on an object?
What is net force?
300
All accelerations are the result of an ___________ acting on an object.
What is unbalanced force?
300
If you are on an elevator and the cable breaks, what would your apparent weight be defined as?
What is 0 or weightless
300
The constant velocity that is reached when the drag force equals the force of gravity is called
What is terminal velocity
300
Which one of Newton’s laws states that an object at rest will remain at rest and a moving object will continue moving in a straight line with constant speed, if and only if the net force acting on that object is zero?
What is Newton's first law?
300
A specific name for the force that a string or rope exerts is _____?
What is tension?
400
What type of force exists when an object from the external world touches a system, exerting force on it
What is contact force?
400
If a plastic bag can hold enough weight for a maximum of 180 N, will that bag be able to hold 17 kg of groceries accelerating at 9 m/s^2?
What is yes
400
How do athletes increase or decrease their terminal velocities?
What is changing their body orientation and shape
400
Another name for an interaction pair is a(n):
What is action-reaction pair?
400
What is the name of the entity exerting the force?
What is agent?
500
True or False: Gravitational force is an example of a field force
What is true?
500
Draw a free diagram of a scale with a person standing on it while in an elevator that is moving upward
- Show to presenters to see if it is correct -
500
When the drag force equals the gravitational force, the object is in __________ so it no longer accelerates
What is equilibrium?
500
If FN=mg, then Fnet must equal…?
What is zero?
500
What is a physical representation that shows the forces acting on a system?