Motion

Question 1

Motion is described in term of

Answer 1

Distance speed acceleration time

Question 2

An object covers unequal distance in equal interval of time

Answer 2

Non uniform motion

Question 3

SI unit of speed / velocity

Answer 3

ms^-1

Question 4

Acceleration

Answer 4

Change in velocity/time
SI unit ms^-2

Question 5

Speed in circular motion

Answer 5

2πr/T

Question 6

Equation of motion

Answer 6

V=u+at
S=ut+1/2(at^2)
V^2=u^2+2as

Question 7

Centripetal acceleration
Centripetal force

Answer 7

a=v^2/r. V velocity
F=ma
F=mv^2/ r

Question 8

Example of centrifugal force

Answer 8

Dryer in washing machine

Question 9

Force like gravitational force, frictional force, magnetic force electrostatic force etc

Answer 9

Centripetal force

Question 10

Force which acts on a body moving in a circular path directed towards the centre

Answer 10

Centripetal force

Question 11

The centrifugal force is

Answer 11

A virtual force