2.1 what are speed, velocity and acceleration

Question 1

speed

Answer 1

distance travelled per unit time

Question 2

SI unit of speed

Answer 2

meter per second (m/s)

Question 3

average speed

Answer 3

total distance / total time (including ‘rest’ time)

Question 4

uniform speed

Answer 4

when change in distance travelled by an object for every unit of time is the same as

Question 5

distance

Answer 5

total length covered by a moving object regardless of the direction of motion

Question 6

displacement

Answer 6

distance measured in a straight line from a fixed reference point

Question 7

velocity

Answer 7

rate of change in displacement

Question 8

velocity formula

Answer 8

displacement/ time taken

Question 9

average velocity formula

Answer 9

total displacement/total time taken

Question 10

acceleration

Answer 10

a vector quantity that refers to rate of change of velocity

Question 11

acceleration formula

Answer 11

change in velocity/time taken

Question 12

SI unit for acceleration

Answer 12

meter per second per second (m/s^2)

Question 13

uniform acceleration

Answer 13

constant rate of change of velocity

Question 15

formula of uniform acceleration

Answer 15

change in velocity/time taken

Question 16

non uniform acceleration

Answer 16

change in velocity for every unit of time is not the same