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Kinematics for 8th Class

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by

vinod kumar

on 2 August 2014

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Transcript of Kinematics for 8th Class

Motion is Relative
Distance and Displacement
Rate of Motion
Uniform Motion
Velocity & Time
Graph
Acceleration
Length of the
actual path
taken to go from source to destination.
Length of the
straight line
joining the source to the destination or in other words the length of the
shortest path.
Speed
Velocity
Distance traveled per unit of time
Displacement traveled per unit of time
When an object covers equal distance in every time interval, it is said to be having uniform motion.
Distance to Time Graph
Acceleration
= Rate of change of velocity
Uniform and
Non-Uniform Acceleration
Equations
Distance
Displacement
Distance
Distance
Displacement
A body is said to be accelerating if there is a change in velocity.
Uniform Acceleration
Non-Uniform Acceleration
1st Equation of Motion
2nd Equation of Motion
3rd Equation of Motion
Consider
Initial velocity = v
Final velocity = u
Sample Problem
Superman covers 60 miles between 2 p.m. and 4 p.m. How fast was he going at 3 p.m.?
Sample Question
Harry porter drive a distance of 1 km at 16 km/h. Then he drive an additional distance of 1 km at 32 km/h. What is his average speed?
Spider man travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed of 66 km/h. Calculate his average speed for the whole trip?
Sample Problem
Full transcript