describing movement

Question 1

a scalar quantity has

Answer 1

size only

Question 2

a vector quantity has

Answer 2

size and direction

Question 3

displacement is measured from the objects

Answer 3

start point to its finish point

Question 4

when an object travels in a straight line without changing direction,

Answer 4

the distance it travel and its displacement are numerically equal

Question 5

scalar quantities include:

Answer 5

distance
time
speed

Question 6

vector quantities include:

Answer 6

displacement

velocity

Question 7

when an object travels in a straight line without changing direction,

Answer 7

its speed and velocity are numerically equal

Question 8

speed is a measure of

Answer 8

how quickly an object travels a certain distance

Question 9

velocity is a measure of

Answer 9

the speed and direction of an object

Question 10

speed, distance, time equation:

Answer 10

distance = speed x time

Question 11

displacement, velocity, time equation:

Answer 11

displacement = velocity x time

Question 12

symbol for average speed&average velocity:

Answer 12

_

v (vee bar)

Question 13

average speed equation:

Answer 13

_
v = total distance divided by total time taken

answer in ms-1

Question 14

average velocity equation:

Answer 14

_
v = final displacement divided by total time taken

answer in ms-1

Question 15

speed equation:

Answer 15

v = distance divided by time

Question 16

instantaneous speed is

Answer 16

speed of an object at a particular moment in time.

not over a long distance or long time period.

Question 17

acceleration measures

Answer 17

how quickly the velocity of an object is changing

Question 18

acceleration equation:

Answer 18

a = change in velocity divided by time

a = v - u divided by t

Question 19

when an object has constant acceleration from initial velocity to final velocity, the equation is:

Answer 19

a = final velocity(v) - initial velocity(u)

divided by time