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VR Tour For Std. 9 Ch. 8. Motion

What's Included in Virtual tour of this chapter

When an object travels equal distances in equal intervals of time the object is said to have a uniform motion. The velocity versus time graph is a horizontal and straight line. The average velocity is equal to displacement by time. And, the unit of velocity is meters per second. The graph of distance versus time for uniform motion is a slanted straight line that shows an object moving with constant speed. For, Non-uniform motion, velocity vs time graph and distance vs time graph is not a horizontal straight line.

Virtual tour 1 Uniform motion

Virtual tour 1: Uniform motion

Uniform motion is defined as a motion of an object in which the object moves in a straight line continuously, at a constant speed all along. In other words, a car travels equal distances in equal time intervals. So, we can say that a car is moving with a uniform motion.

Virtual tour 2 Velocity vs Time graph for uniform motion

Virtual tour 2: Velocity vs Time graph for uniform motion

Velocity is nothing else but a speed in a given direction. It means we can say that velocity depends on time. If the speed is zero, then the slope is zero (i.e., a horizontal line). The slope of a velocity-time graph reveals information about an object’s speed. An object travels equal distances in equal intervals of time at a constant speed.

Virtual tour 3 Distance vs Time graph for uniform motion

Virtual tour 3: Distance vs Time graph for uniform motion

A distance-time graph will represent how far an object has covered a distance in a given time. In other words, the distance traveled by the object is directly proportional to the time taken. Thus, for uniform speed, a graph of distance traveled against time is a straight line.

Virtual tour 4 Non-Uniform motion

Virtual tour 4: Non-Uniform motion

The motion of the object is said to be in non-uniform motion when the object keeps changing its speed while moving along a straight line. This type of motion is defined as the motion of an object in which the object travels with varied speed and it does not cover the same distance in equal time intervals, irrespective of the time interval duration.

Virtual tour 5 Distance Vs Time Graph for non-uniform motion

Virtual tour 5: Distance Vs Time Graph for non-uniform motion

In this virtual tour, we will understand the distance vs time graph for non-uniform motion with an example. The distance-time graph will indicate the type of motion whether it is uniform motion or non-uniform motion.

Virtual tour 6 Velocity Vs Time non-uniform motion

Virtual tour 6: Velocity Vs Time non-uniform motion

If an object is in non-uniform motion, its velocity does not remain constant. Acceleration is the rate of change of velocity with respect to time. And the graph for velocity versus time is not a horizontal or straight line.