Define:- speed , velocity, acceleration, uniform and non uniform speed, uniform and non uniform velocity, uniform and non uniform acceleration, inertia, momentum, free fall, acceleration due to gravity, kinetic energy and potential energy.
Answers
Answer:
Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).
In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities (in that they have magnitude and direction). The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
The condition in which a body covers equal distance in an equal interval of the time is known to be uniform velocity. In equation( d=v t ) v is the average velocity of a body during time t. if both its magnitude and direction do not change with time then it can be said that the body is at uniform velocity.
If an object covers equal distance in equal interval of time, then time speed graph of an object is a straight line parallel to time axis then body is moving with a uniform speed. Non-uniform speed : If the speed of a body is changing with respect to time it is moving with a non-uniform speed.
Energy stored in an object due to its position is Potential Energy. Energy that a moving object has due to its motion is Kinetic Energy.
A free-falling object has an acceleration of 9.8 m/s/s, downward (on Earth). ... The numerical value for the acceleration of gravity is most accurately known as 9.8 m/s/s. There are slight variations in this numerical value (to the second decimal place) that are dependent primarily upon on altitude.
Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them
Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum - it has its mass in motion. The amount of momentum that an object has is dependent upon two variables: how much stuff is moving and how fast the stuff is moving
In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it.
Answer:
ꜱᴘᴇᴇᴅ:-
- ꜱᴘᴇᴇᴅ ᴄᴀɴ ʙᴇ ᴛʜᴏᴜɢʜᴛ ᴏꜰ ᴀꜱ ᴛʜᴇ ʀᴀᴛᴇ ᴀᴛ ᴡʜɪᴄʜ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴄᴏᴠᴇʀꜱ ᴅɪꜱᴛᴀɴᴄᴇ. ᴀ ꜰᴀꜱᴛ-ᴍᴏᴠɪɴɢ ᴏʙᴊᴇᴄᴛ ʜᴀꜱ ᴀ ʜɪɢʜ ꜱᴘᴇᴇᴅ ᴀɴᴅ ᴄᴏᴠᴇʀꜱ ᴀ ʀᴇʟᴀᴛɪᴠᴇʟʏ ʟᴀʀɢᴇ ᴅɪꜱᴛᴀɴᴄᴇ ɪɴ ᴀ ɢɪᴠᴇɴ ᴀᴍᴏᴜɴᴛ ᴏꜰ ᴛɪᴍᴇ, ᴡʜɪʟᴇ ᴀ ꜱʟᴏᴡ-ᴍᴏᴠɪɴɢ ᴏʙᴊᴇᴄᴛ ᴄᴏᴠᴇʀꜱ ᴀ ʀᴇʟᴀᴛɪᴠᴇʟʏ ꜱᴍᴀʟʟ ᴀᴍᴏᴜɴᴛ ᴏꜰ ᴅɪꜱᴛᴀɴᴄᴇ ɪɴ ᴛʜᴇ ꜱᴀᴍᴇ ᴀᴍᴏᴜɴᴛ ᴏꜰ ᴛɪᴍᴇ.
ᴠᴇʟᴏᴄɪᴛʏ:-
- ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ɪꜱ ᴛʜᴇ ʀᴀᴛᴇ ᴏꜰ ᴄʜᴀɴɢᴇ ᴏꜰ ɪᴛꜱ ᴘᴏꜱɪᴛɪᴏɴ ᴡɪᴛʜ ʀᴇꜱᴘᴇᴄᴛ ᴛᴏ ᴀ ꜰʀᴀᴍᴇ ᴏꜰ ʀᴇꜰᴇʀᴇɴᴄᴇ, ᴀɴᴅ ɪꜱ ᴀ ꜰᴜɴᴄᴛɪᴏɴ ᴏꜰ ᴛɪᴍᴇ. ᴠᴇʟᴏᴄɪᴛʏ ɪꜱ ᴇQᴜɪᴠᴀʟᴇɴᴛ ᴛᴏ ᴀ ꜱᴘᴇᴄɪꜰɪᴄᴀᴛɪᴏɴ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ'ꜱ ꜱᴘᴇᴇᴅ ᴀɴᴅ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏꜰ ᴍᴏᴛɪᴏɴ (ᴇ.ɢ. 60 ᴋᴍ/ʜ ᴛᴏ ᴛʜᴇ ɴᴏʀᴛʜ).
ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ:-
- ɪɴ ᴍᴇᴄʜᴀɴɪᴄꜱ, ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪꜱ ᴛʜᴇ ʀᴀᴛᴇ ᴏꜰ ᴄʜᴀɴɢᴇ ᴏꜰ ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴡɪᴛʜ ʀᴇꜱᴘᴇᴄᴛ ᴛᴏ ᴛɪᴍᴇ. ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴꜱ ᴀʀᴇ ᴠᴇᴄᴛᴏʀ Qᴜᴀɴᴛɪᴛɪᴇꜱ (ɪɴ ᴛʜᴀᴛ ᴛʜᴇʏ ʜᴀᴠᴇ ᴍᴀɢɴɪᴛᴜᴅᴇ ᴀɴᴅ ᴅɪʀᴇᴄᴛɪᴏɴ). ᴛʜᴇ ᴏʀɪᴇɴᴛᴀᴛɪᴏɴ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ'ꜱ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪꜱ ɢɪᴠᴇɴ ʙʏ ᴛʜᴇ ᴏʀɪᴇɴᴛᴀᴛɪᴏɴ ᴏꜰ ᴛʜᴇ ɴᴇᴛ ꜰᴏʀᴄᴇ ᴀᴄᴛɪɴɢ ᴏɴ ᴛʜᴀᴛ ᴏʙᴊᴇᴄᴛ
ᴜɴɪꜰᴏʀᴍ ᴀɴᴅ ɴᴏɴ ᴜɴɪꜰᴏʀᴍ ꜱᴘᴇᴇᴅ:-
- ɪꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴄᴏᴠᴇʀꜱ ᴇQᴜᴀʟ ᴅɪꜱᴛᴀɴᴄᴇ ɪɴ ᴇQᴜᴀʟ ɪɴᴛᴇʀᴠᴀʟ ᴏꜰ ᴛɪᴍᴇ, ᴛʜᴇɴ ᴛɪᴍᴇ ꜱᴘᴇᴇᴅ ɢʀᴀᴘʜ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ɪꜱ ᴀ ꜱᴛʀᴀɪɢʜᴛ ʟɪɴᴇ ᴘᴀʀᴀʟʟᴇʟ ᴛᴏ ᴛɪᴍᴇ ᴀxɪꜱ ᴛʜᴇɴ ʙᴏᴅʏ ɪꜱ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ ᴀ ᴜɴɪꜰᴏʀᴍ ꜱᴘᴇᴇᴅ. ɴᴏɴ-ᴜɴɪꜰᴏʀᴍ ꜱᴘᴇᴇᴅ : ɪꜰ ᴛʜᴇ ꜱᴘᴇᴇᴅ ᴏꜰ ᴀ ʙᴏᴅʏ ɪꜱ ᴄʜᴀɴɢɪɴɢ ᴡɪᴛʜ ʀᴇꜱᴘᴇᴄᴛ ᴛᴏ ᴛɪᴍᴇ ɪᴛ ɪꜱ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ ᴀ ɴᴏɴ-ᴜɴɪꜰᴏʀᴍ ꜱᴘᴇᴇᴅ.
ᴜɴɪꜰᴏʀᴍ ᴀɴᴅ ɴᴏɴ ᴜɴɪꜰᴏʀᴍ ᴠᴇʟᴏᴄɪᴛʏ:-
- ᴡʜᴇɴ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴄᴏᴠᴇʀꜱ ᴜɴᴇQᴜᴀʟ ᴅɪꜱᴛᴀɴᴄᴇꜱ ɪɴ ᴇQᴜᴀʟ ɪɴᴛᴇʀᴠᴀʟꜱ ᴏꜰ ᴛɪᴍᴇ ɪɴ ᴀ ꜱᴘᴇᴄɪꜰɪᴇᴅ ᴅɪʀᴇᴄᴛɪᴏɴ. ɪꜰ ᴛʜᴇ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏꜰ ᴍᴏᴛɪᴏɴ ᴄʜᴀɴɢᴇꜱ, ɪᴛ ɪꜱ ꜱᴀɪᴅ ᴛᴏ ʙᴇ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ ᴀ ɴᴏɴ-ᴜɴɪꜰᴏʀᴍ ᴏʀ ᴠᴀʀɪᴀʙʟᴇ ᴠᴇʟᴏᴄɪᴛʏ. ᴇ.ɢ., ᴀ ʀᴇᴠᴏʟᴠɪɴɢ ꜰᴀɴ ᴀᴛ ᴀ ᴄᴏɴꜱᴛᴀɴᴛ ꜱᴘᴇᴇᴅ ʜᴀꜱ ᴠᴀʀɪᴀʙʟᴇ ᴠᴇʟᴏᴄɪᴛʏ.
ᴜɴɪꜰᴏʀᴍ ᴀɴᴅ ɴᴏɴ ᴜɴɪꜰᴏʀᴍ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ:-
- ɪᴛ ᴍᴇᴀɴꜱ ᴛʜᴀᴛ ᴛʜᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪꜱ ᴄᴏɴꜱᴛᴀɴᴛ, ᴀɴᴅ ɴᴇɪᴛʜᴇʀ ɪɴᴄʀᴇᴀꜱɪɴɢ ɴᴏʀ ᴅᴇᴄʀᴇᴀꜱɪɴɢ. ... ᴜɴɪꜰᴏʀᴍ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪꜱ ᴄʜᴀɴɢᴇ ᴏꜰ ᴇQᴜᴀʟ ᴠᴇʟᴏᴄɪᴛʏ ɪɴ ᴇQᴜᴀʟ ɪɴᴛᴇʀᴠᴀʟꜱ ᴏꜰ ᴛɪᴍᴇ. ɴᴏɴ ᴜɴɪꜰᴏʀᴍ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪꜱ ᴄʜᴀɴɢᴇ ᴏꜰ ɴᴏɴ-ᴇQᴜᴀʟ ᴠᴇʟᴏᴄɪᴛʏ ɪɴ ᴇQᴜᴀʟ ɪɴᴛᴇʀᴠᴀʟꜱ ᴏꜰ ᴛɪᴍᴇ
ɪɴᴇʀᴛɪᴀ:-
- ɪɴᴇʀᴛɪᴀ ɪꜱ ᴛʜᴇ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ᴏꜰ ᴀɴʏ ᴘʜʏꜱɪᴄᴀʟ ᴏʙᴊᴇᴄᴛ ᴛᴏ ᴀɴʏ ᴄʜᴀɴɢᴇ ɪɴ ɪᴛꜱ ᴠᴇʟᴏᴄɪᴛʏ. ᴛʜɪꜱ ɪɴᴄʟᴜᴅᴇꜱ ᴄʜᴀɴɢᴇꜱ ᴛᴏ ᴛʜᴇ ᴏʙᴊᴇᴄᴛ'ꜱ ꜱᴘᴇᴇᴅ, ᴏʀ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏꜰ ᴍᴏᴛɪᴏɴ. ᴀɴ ᴀꜱᴘᴇᴄᴛ ᴏꜰ ᴛʜɪꜱ ᴘʀᴏᴘᴇʀᴛʏ ɪꜱ ᴛʜᴇ ᴛᴇɴᴅᴇɴᴄʏ ᴏꜰ ᴏʙᴊᴇᴄᴛꜱ ᴛᴏ ᴋᴇᴇᴘ ᴍᴏᴠɪɴɢ ɪɴ ᴀ ꜱᴛʀᴀɪɢʜᴛ ʟɪɴᴇ ᴀᴛ ᴀ ᴄᴏɴꜱᴛᴀɴᴛ ꜱᴘᴇᴇᴅ, ᴡʜᴇɴ ɴᴏ ꜰᴏʀᴄᴇꜱ ᴀᴄᴛ ᴜᴘᴏɴ ᴛʜᴇᴍ
ᴍᴏᴍᴇɴᴛᴜᴍ:-
- ᴍᴏᴍᴇɴᴛᴜᴍ ᴄᴀɴ ʙᴇ ᴅᴇꜰɪɴᴇᴅ ᴀꜱ "ᴍᴀꜱꜱ ɪɴ ᴍᴏᴛɪᴏɴ." ᴀʟʟ ᴏʙᴊᴇᴄᴛꜱ ʜᴀᴠᴇ ᴍᴀꜱꜱ; ꜱᴏ ɪꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ɪꜱ ᴍᴏᴠɪɴɢ, ᴛʜᴇɴ ɪᴛ ʜᴀꜱ ᴍᴏᴍᴇɴᴛᴜᴍ - ɪᴛ ʜᴀꜱ ɪᴛꜱ ᴍᴀꜱꜱ ɪɴ ᴍᴏᴛɪᴏɴ. ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏꜰ ᴍᴏᴍᴇɴᴛᴜᴍ ᴛʜᴀᴛ ᴀɴ ᴏʙᴊᴇᴄᴛ ʜᴀꜱ ɪꜱ ᴅᴇᴘᴇɴᴅᴇɴᴛ ᴜᴘᴏɴ ᴛᴡᴏ ᴠᴀʀɪᴀʙʟᴇꜱ: ʜᴏᴡ ᴍᴜᴄʜ ꜱᴛᴜꜰꜰ ɪꜱ ᴍᴏᴠɪɴɢ ᴀɴᴅ ʜᴏᴡ ꜰᴀꜱᴛ ᴛʜᴇ ꜱᴛᴜꜰꜰ ɪꜱ ᴍᴏᴠɪɴɢ.
ꜰʀᴇᴇ ꜰᴀʟʟ:-
- ɪɴ ɴᴇᴡᴛᴏɴɪᴀɴ ᴘʜʏꜱɪᴄꜱ, ꜰʀᴇᴇ ꜰᴀʟʟ ɪꜱ ᴀɴʏ ᴍᴏᴛɪᴏɴ ᴏꜰ ᴀ ʙᴏᴅʏ ᴡʜᴇʀᴇ ɢʀᴀᴠɪᴛʏ ɪꜱ ᴛʜᴇ ᴏɴʟʏ ꜰᴏʀᴄᴇ ᴀᴄᴛɪɴɢ ᴜᴘᴏɴ ɪᴛ. ɪɴ ᴛʜᴇ ᴄᴏɴᴛᴇxᴛ ᴏꜰ ɢᴇɴᴇʀᴀʟ ʀᴇʟᴀᴛɪᴠɪᴛʏ, ᴡʜᴇʀᴇ ɢʀᴀᴠɪᴛᴀᴛɪᴏɴ ɪꜱ ʀᴇᴅᴜᴄᴇᴅ ᴛᴏ ᴀ ꜱᴘᴀᴄᴇ-ᴛɪᴍᴇ ᴄᴜʀᴠᴀᴛᴜʀᴇ, ᴀ ʙᴏᴅʏ ɪɴ ꜰʀᴇᴇ ꜰᴀʟʟ ʜᴀꜱ ɴᴏ ꜰᴏʀᴄᴇ ᴀᴄᴛɪɴɢ ᴏɴ ɪᴛ.
ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴅᴜᴇ ᴛᴏ ɢʀᴀᴠɪᴛʏ:-
- ᴀ ꜰʀᴇᴇ-ꜰᴀʟʟɪɴɢ ᴏʙᴊᴇᴄᴛ ʜᴀꜱ ᴀɴ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴏꜰ 9.8 ᴍ/ꜱ/ꜱ, ᴅᴏᴡɴᴡᴀʀᴅ (ᴏɴ ᴇᴀʀᴛʜ). ... ᴛʜᴇ ɴᴜᴍᴇʀɪᴄᴀʟ ᴠᴀʟᴜᴇ ꜰᴏʀ ᴛʜᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴏꜰ ɢʀᴀᴠɪᴛʏ ɪꜱ ᴍᴏꜱᴛ ᴀᴄᴄᴜʀᴀᴛᴇʟʏ ᴋɴᴏᴡɴ ᴀꜱ 9.8 ᴍ/ꜱ/ꜱ. ᴛʜᴇʀᴇ ᴀʀᴇ ꜱʟɪɢʜᴛ ᴠᴀʀɪᴀᴛɪᴏɴꜱ ɪɴ ᴛʜɪꜱ ɴᴜᴍᴇʀɪᴄᴀʟ ᴠᴀʟᴜᴇ (ᴛᴏ ᴛʜᴇ ꜱᴇᴄᴏɴᴅ ᴅᴇᴄɪᴍᴀʟ ᴘʟᴀᴄᴇ) ᴛʜᴀᴛ ᴀʀᴇ ᴅᴇᴘᴇɴᴅᴇɴᴛ ᴘʀɪᴍᴀʀɪʟʏ ᴜᴘᴏɴ ᴏɴ ᴀʟᴛɪᴛᴜᴅᴇ
ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ ᴀɴᴅ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ:-
- ᴇɴᴇʀɢʏ ꜱᴛᴏʀᴇᴅ ɪɴ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴅᴜᴇ ᴛᴏ ɪᴛꜱ ᴘᴏꜱɪᴛɪᴏɴ ɪꜱ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ. ᴇɴᴇʀɢʏ ᴛʜᴀᴛ ᴀ ᴍᴏᴠɪɴɢ ᴏʙᴊᴇᴄᴛ ʜᴀꜱ ᴅᴜᴇ ᴛᴏ ɪᴛꜱ ᴍᴏᴛɪᴏɴ ɪꜱ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ.