Energy
When an object absorbs energy, the change in temperature will be _____?
Positive, increase, higher
What is the potential energy of a 55 kg box that is sitting 8.0 m above the ground?
4,312 J
The tendency to do nothing or stay unchanged.
What is inertia?
A measure of the Rate at which work is done
What is power?
What is the average acceleration of any object falling down?
a= 9.8 m/s2
Energy cannot be created nor destroyed, only transferred.
What is the law of conservation of energy?
A force of 30 N is used to push a box along the floor a distance of 5 meters. How much work was done?
150 J
Unit of measurement for mass
What is kilograms?
The velocity of an object must include both a ____________________ and a ____________________.
speed; direction
A train traveled 20 miles North in 30 minutes (0.5 hrs). What is the train's velocity in MPH? (V=D/T)
What is 40 MPH North?
What is Q = mcΔT?
The formula for specific heat
A person walking covers 5.20 m in 10.4 s. How fast is the person moving?
v= 0.50 m/s
The greater the force that is applied, the _________ the acceleration.
What is greater?
A form of energy that an object or particle has by reason of its motion
What is kinetic energy?
Work is measured in ________.
What is joules?
The air in a living room has a mass of 60 kg and a specific heat of 1,020 J/kg C. What is the change in thermal energy of the air when it warms from 20 C to 25 C?
Q = 306,000 J
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
0.25 km/min
This property of an object determines how much inertia it has.
What is mass?
The transfer of energy that occurs when a force makes an object move
What is work?
Power is measured in _____________.
What is watts?
What are the seven types of energies?
Radiant (light), sound, electromagnetic, electrical, chemical, mechanical, thermal (heat)
Justin kicks a football straight up during a game. Assuming all energy is conserved, at what height did the 2.6 kg ball travel if it had a velocity of 6 m/s?
1.84 m
Newton's 3rd law says that forces must always occur in __________.
What is pairs?
The energy that an object has due to its position above the earth, energy due to its height
What is gravitational potential energy?
Current is measured in ____________.
What is amps?