Physics exam vocab

Question 1

acceleration

Answer 1

rate of change of velocity

Question 2

Air resistance

Answer 2

force caused by air, drag

Question 3

Average speed

Answer 3

distance travelled by object within a period of time

Question 4

Displacement

Answer 4

measurement of change in position of moving body (length and direction)

Question 5

Distance (travelled)

Answer 5

total distance of path travelled between two distances

Question 6

efficiency

Answer 6

useful energy output over total energy output

Question 7

elastic potential energy

Answer 7

energy stored as a result of an elastic object

Question 8

Free fall

Answer 8

state of an object that moves freely where gravity is the only acting force

Question 9

gradient

Answer 9

how steep a line is, slope. rate of change with respect to distance of quantity in direction of maximum change

Question 10

Gravitational potential energy

Answer 10

potential energy possessed by an object due to its position above the ground

Question 11

inertia

Answer 11

object continues its current motion until some force changes its current speed or direction

Question 12

instantaneous speed

Answer 12

speed of an object at a particular moment in time

Question 13

instantaneous speed

Answer 13

speed of an object at a particular moment in time

Question 14

kinetic energy

Answer 14

energy of a moving body

Question 15

law of conservation of energy

Answer 15

that energy cant be created or destroyed only transferred

Question 16

magnitude

Answer 16

distance or quantity in which an object moves in the sense of motion

Question 17

mechanical energy

Answer 17

is energy possessed by an object due to its motion or position

Question 18

Newtons 1st law

Answer 18

object in motion stays in motion, object at rest stays at rest unless acted on by unbalanced force

Question 19

Newtons 2nd law

Answer 19

acceleration of an object depends on force acting upon object, and its mass

Question 20

newtons 3rd law

Answer 20

for every force in a structure, there is an equal and opposite force acting on that structure.

Question 21

potential energy

Answer 21

stored energy in an object

Question 22

reaction distance

Answer 22

the reaction time of an object times the speed

Question 23

reaction time

Answer 23

the time between a stimulus and response

Question 24

scalar

Answer 24

quantities described by magnitude

Question 25

speed

Answer 25

how fast an object is moving

Question 26

vector

Answer 26

quantity that has both magnitude and direction

Question 27

velocity

Answer 27

the rate of change of displacement

Question 28

velocity (terminal)

Answer 28

maximum velocity attainable by an object as it falls through a fluid