Physics Final (2b): ENERGY & CONSERVATION

Question 1

Energy

Answer 1

the ability to do work, to cause a force that moves an object a distance

Question 2

Work (W) (W=Fd)

Answer 2

the ability of a force to change forms of energy.

the equation W = Fd measures (W)ork by multiplying (F)orce by (d)istance.

Question 3

Work-Energy Theorem

Answer 3

Work (W) can also be defined as a change in kinetic energy

Question 4

Mechanical Energy

Answer 4

energy due to the position and/or the motion of an object

Question 5

Kinetic Energy (KE)

Answer 5

energy of motion.

for the equation for Kinetic Energy (KE) = 1/2mv{squared}, multiply 0.5 times (m)ass times (v)elocity squared.

the answer is given in joules.

Question 6

Potential Energy (PE) (PE=mgh)

Answer 6

energy that has been stored or held.

the equation PE = mgh multiplies (m)ass by the acceleration due to (g)ravity by the (h)eight. the answer is given in joules.

Question 7

Gravitational Potential Energy (GPE)

Answer 7

Potential Energy due to an elevated position (based on the force of gravity)