Motion Mind Map PDF

MOTION 01 02 03 04 05 06 REST...

MOTION 01 02 03 04 05 06 REST MOTION REFERENCE POINT DISTANCE DISPLACEMENT SPEED If position of an object with If position of an object with A point with respect to Distance is the length of the Displacement is the length It is time rate at which an respect to its surroundings respect to its surroundings which the position of an actual path travelled by an of the shortest path from object travels distance. The doesn’t change with time, changes with time, we say object is described is called object from one point to the initial point to the final SI unit of speed is metre per we say that the object is at that the object is in motion. reference point. We choose another point. point. It is a vector quantity second and represented as rest. Example: A tree and a Example- Position of a a reference point according that has magnitude as well m/s. building with respect to moving car with respect to to our convenience. as direction. ground are at rest. ground changes with time. 10 11 12 07 08 09 UNIFORM MOTION UNIFORM CIRCULAR NON UNIFORM If an object moves equal MOTION MOTION AVERAGE SPEED VELOCITY ACCELERATION distance in equal If an object moves unequal When an object moves on a The speed defined for a The speed in a particular direction is The time rate of change of velocity is called time-intervals, the motion is distance in equal circular path with a constant time-interval is known as called velocity. Thus, velocity has two type acceleration. If the velocity of an object changes called uniform motion. time-intervals, the motion is speed not velocity, the motion of average speed. of variables speed and direction. It can be from an initial value u to the final value v in time Example: A bike moving with called non-uniform motion. the object is known as uniform If an object travels a changed by changing the object’s speed, t, the acceleration, constant speed. Example- Motion of car on a circular motion. Example-Motion distance s in time t then its direction of motion or both. Its SI unit is a = V -t U. The SI unit of acceleration is ms-2. crowded road. of Tip of needles in watch. speed v is,v = s metre per second and represented as If the change in velocity is equal in equal time t m/s. intervals, the acceleration is called uniform If velocity of an object is changing at a acceleration. The motion of a freely falling object uniform rate, then average velocity is is a uniformly accelerated motion.If the change average velocity =initial velocity(u) + final in velocity is unequal in equal time intervals, the velocity(v)/2 or V = U + V > acceleration is called non-uniform acceleration. 15 avg 2 if a bike travelling along a straight road increases its speed by unequal amounts in equal intervals of time, then the motion of the GRAPHICAL REPRESENTATION OF MOTION bike is called non-uniform accelerated motion. 1 Distance: Time Graph-In this graph, time is 2 Velocity Time Graph: In this graph, time is taken along the x–axis and distance are taken taken along the x–axis and velocity are taken along the y-axis. along the y-axis. y 13 14 50 Distance Distance (m) 40 30 Velocity Velocity STRAIGHT LINE EQUATIONS OF MOTION 20 MOTION 1st equation, v = u + at 1 10 2nd equation, S = ut + 2 at2 0 x Time Time 5 10 15 20 25 Time If an object moves along a (a) For uniform motion (b) For uniform 3rd equation, v2 = u2 + 2aS. Time (sec) (b) For non-uniform straight line, this type of accelerated motion (a) For uniform speed motion- The graph will motion is known as straight The graph will be a be non-linear that line motion. Example: A bus straight line. means it will be curved moving on a straight road. shape.