Motion
this is the change in an object’s position relative to a reference point
what is motion?
this is the momentum when a person has a mass of 10 kg and a velocity of 6 m/s.
what is 60 kgm/s
this is the energy due to motion
what is kinetic energy?
A 4.0 kg ceiling fan is placed 2.5 m above the floor. What is the gravitational potential energy of the Earth-ceiling fan system relative to the floor?
what is 98 J
this is the closed path that an electric current flows
what are electric circuits?
this is the distance and direction of an object's position
what is displacement?
this is the acceleration when a person goes from a stopped position to 5 m/s in 10 seconds.
what is .5 m/s2
this is the sum of kinetic and potential energies
what is mechanical energy?
A jogger with a mass of 60.0 kg is moving forward at a speed of 3.0 m/s. What is the jogger’s kinetic energy from this forward motion?
what is 270 J?
these may act as a power supply to provide a voltage difference for a circuit
what are batteries?
this is the difference between speed and velocity. (be specific)
what is speed does not have direction but velocity does
What net force is required to accelerate a car at a rate of 2 m/s2 if the car has a mass of 3,000 kg?
what is 6,000 N?
this is the equation for kinetic energy
what is 1/2mv2
The voltage difference in a graphing calculator is 6V, and the resistance is 1,200 ohms. What is the current through the batteries of the graphing calculator?
what is 0.005 w
tendency for a material to resist the flow of electrons and to convert electrical energy into other forms of energy such as thermal energy
what is resistance?
this is the product of an object's mass and velocity
what is momentum?
This is the mass of a falling rock if it produces a force of 147 N?
Gravity= 9.8 m/s2
what is 15 kg?
these are the three types of potential energy
what are gravitational, elastic, and chemical
A toy car with a resistance of 20 ohms is connected to a 3 V battery. What is the current in the car?
what is 0.15 W
this is an electric circuit with only one branch that has the same current through every part
what is a series circuit?
this is the law of inertia
what is newton's first law?
Engineers at the Johnson Space Center must determine the net force needed for a rocket to achieve an acceleration of 70 m/s2 . If the mass of the rocket is 45,000 kg, how much net force must the rocket develop?
what is 3,150,000?
this is the rate at which energy is converted
what is power?
The current in a clothes dryer is 15 A when it is plugged into a 240-volt outlet. What is the power of the clothes dryer.
what is 3600 W
what is V=IR