When do we say a body to be in motion .
A body is said to be in motion if it changes its position with respect to its surroundings and time.
If the motion of a body is along a straight line, it is said to be a rectilinear motion. (TRUE OR FALSE?)
TRUE
Two trains are going in opposite directions with the same speed. Which state are they said to be with respect to each other?
MOTION
Non- periodic motion can be defined as ____________________________________.
The kind of motion which does not get repeated after a regular interval of time is called a non-periodic motion.
The motion of a bullet fired from a gun possesses which kind of motion?
Rectilinear motion
Mass has both magnitude and direction. TRUE OR FALSE ?
FALSE
A ball thrown vertically upwards possesses uniform motion throughout its journey. TRUE OR FALSE ?
FALSE
A box lying on a floor is an example of : ( )
(A) a body at rest
(B) a body in motion
(C) a body neither at rest nor in motion
(D) none of these.
(A)
Guess and define the type of motion possessed by a car moving in a busy street/ market _________
Non -uniform motion.
If a moving body travels unequal distances in equal intervals of time, its motion is said to be non uniform.
The earth attracts a body of mass 1.0 kg with a force of 10 N. The mass of a boy is 45 kg. His weight will be : _______
450 N
The correct relation among the following options is: ______________. (A) 1 km h-¹ = 5 / 18 m s- ¹
(B) 1 km h-¹ = 18/ 5 m s- ¹
(A) 1 km h-¹ = 5 / 18 m s- ¹
The weight of a body on moon’s surface is ____ of the weight of the body on earth's surface.
1/6 th
A ball rolling on the ground has rotatory motion as well as translatory motion. A special name is given to such a kind of motion. Guess the type of motion .
Mixed motion
In rotatory motion, different parts of the body move through different distances during the different time. ( )
State whether the given statement is true or false
False
A ball is thrown by a boy from a roof top has oscillatory motion. Identify the mistake in the given statement and replace the word with the suitable word.
Curvilinear motion
