Heat and Energy

A 0.10kg bird is flying at a constant speed of 8.0m/s. What is the bird’s kinetic energy?

• 3.2J

• 0.8J

• 3.2

• 0.8

Tags

NGSS.HS-PS3-1

A pitcher throws a 0.145kg baseball at a velocity of 30.0m/s. How much kinetic energy does the ball have?

• 45

• 32.6

• 4.35J

• 65.25J

Tags

NGSS.MS-PS3-1

A 10.0-kg ball rolls at a rate of 2.98 m/s. What is the kinetic energy of the ball?

• 55.34

• 25.5

• 44.40J

• 29.8J

Tags

NGSS.HS-PS3-2

A boy, exerting 65.25j and with a mass of ____kg, skates around a rink at a speed of 10.05 m/s. Find the MASS.

• 1.292J

• 1.32J

• 1.573J

• 1.465J

Tags

NGSS.HS-PS2-1

Whats the definition of energy?

• Energy cannot be created nor destroyed

• the ability of an object to cause change

• energy in the form of motion

• stored energy

Whats the definition of potential energy

• related to height above Earth’s surface

• object that is stretched or compressed

• transfer of energy through matter by direct contact of particles

• stored energy

Tags

NGSS.MS-PS3-2

What does the law of conservation of mass state

• Energy cannot be created nor destroyed

• Energy can be created but not destroyed

• Energy can be destroyed but not created

• Energy is able to create and destroy

Tags

NGSS.HS-PS1-7

How many forms of energy are there?

• 8

• 7

• 6

• 3

Tags

NGSS.HS-PS3-3

What is the first law of thermodynamics

• As energy is converted into another form, some of its lost to heat

• entropy at absolute zero is exactly equal to zero

• Thermodynamics can be adjusted with heat and energy

• conservation of energy

Define Elastic Potential Energy

• object that is turned into heat

• object that is stretched or compressed

• object that can compress heat

• object that can convert into physical energy

Tags

NGSS.HS-PS3-3