Force
what two types of force are non-contact
gravitational and magnetic forces
if two marbles collide together they are
coming into contact with each other at
same time in opposite directions
plants get energy from __________ energy
light
mechanical waves need what to travel
a medium
the word radiant means
light
when climbing what is a force that is constant
gravitational force
a soccer ball on the ground will exert a downward force on the ground, the magnitude of the upward force excreted from the soccer ball by the ground.
what is the force (number)
the amount that was exerted downward will be the same amount the the upward force
a plant stores sugar and will later be used as what type of energy
chemical energy
longitudinal waves move
parallel to the direction of the energy transfer
elastic energy
a type of potential energy stored in objects that are stretched, compressed, or twisted
what is the calculation for forces going in opposite directions
subtract
a marble rolls off a table, starting from the top of the table what energies are going on
at the top of table- gravitational potential energy
as it falls to the ground- kinetic energy
for a machine to have movement (spin) , what energy is taking place ?
mechanical
waves that move perpendicular are called
transverse waves
if an object sitting on the ground has a downward gravitational force of 50 newtons, what is the upward force from the ground
50 newtons
how do you know if forces are balance or unbalanced
balance = 0, no motion is going on
unbalanced= there is a number from the netforce calculations. the number/answer is not zero
all objects listed below are traveling the same speed. which one has the LEAST kinetic energy
a running cheetah
serving a volleyball
flying a paper airplane
least kinetic = paper airplane
what energy transformation is taking place for a plant to grow by a window
light energy to chemical energy
sound from a violin string is produced (vibration), how does the energy from the violin string transfer to the persons ear?
parallel to the direction the wave's vibration
what type of wave requires a medium to travel through
sound
a parked car (at rest) would be
balance- no motion going on
what is the difference of potential and kinetic energy
potential = no motion
kinetic = has motion
if a wind turbine is spinning what transformation is taking place.
hint- wind turbine produce electricity
mechanical to electrical
sound leaving a speaker vibrate back and forth, this is also know as
left to right
what are examples of mechanical energy
anything that moves/ motion
machine
motor
human