This is the name of the force that keeps things moving in a circle and is perpendicular to the velocity
What is centripetal force
100
This is the method of using units as algebra quantities to convert units through cancellation.
What is dimensional analysis
100
A direct push or pull that involves touching.
What is a contact force
100
This is the rate at which a velocity changes.
What is the acceleration
100
The part of velocity that changes in uniform circular motion
What is direction
200
The force will increase if this happens to the mass. (Increase, decrease, stays the same)
What is increase
200
This is the number of seconds in 3.0 minutes
What is 180 seconds
200
An indirect push or pull, touching was not involved.
What is a field force?
200
A car slows down from 30 m/s and comes to a stop. This is the final velocity.
What is 0 m/s.
200
The inertia of an object depends on the change in the following
What is mass
300
This will happen to the force if the radius decreases. (Increases, decreases, stays the same)
What is increase
300
This is the number of seconds in 20 hrs
What is 70,000 sec
300
The net force if a box is pushed with a 3N force to the left and a 2N force to the right.
What is 1 N to the left
300
This is the change in velocity for a car moving at 90. m/s and slowing to 40. m/s.
What is -50. m/s
300
The mathematical relationship between centripetal force and mass of the object rotating
What is direct or directly proportional or linear
400
What is the period for an object that moves in a circle at 69 revolutions per minute. (Use similar sig figs to our practice problems and have the correct units!)
What is 0.87 sec
400
The number of days for 500,000 seconds
What is 6 days
400
The net force is a box has one rope pulling it up with 5 N, a second rope pulling it up with 2N, and a weight pulling it down with 3N.
What is 4N up.
400
This is the acceleration of a car moving at 15 m/s that increases its speed to 25 m/s over 10 seconds. (sig figs and units!)
What is 1 m/s^2
400
This is the principle governing how objects move in the presence or absence of a force
What is Newton's First Law (Law of Inertia)
500
The centripetal acceleration for an object moving at 30 m/s around a circle that has a 5 m radius (Units and sig figs!)
What is 100 m/s^2
500
The number of km/min equal to 30,000m/s (sig figs!)
What is 2000 km/min (1 sig fig)
500
A description of the force if a car continues to move at a constant velocity of 25 m/s without changing.
What is equilibrium or net force of zero or balanced forces.
500
This is what a negative acceleration means.
What is the car slowing down (at a constant rate)
500
The velocity of a car with a centripetal acceleration of 4m/s^2 moving at a radius of 9m