What is the nature of the distance-time graphs for uniform and non-uniform motion of an object?
The distance-time graph for uniform motion of an object is a straight line (as shown in the following figure).
The distance-time graph for non-uniform motion of an object is a curved line (as shown in the given figure).
The graph given alongside shows the positions of a body at different times. Calculate the speed of the body as it moves from :
(1) A to B,
(2) B to C, and
(3) C to D.
A cyclist is travelling at 15 m s-1. She applies brakes so that she does not collide with a wall 18 m away. What deceleration must she have ?
What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?
A car is travelling at 20 m/s along a road. A child runs out into the road 50 m ahead and the car driver steps on the brake pedal. What must the car’s deceleration be if the car is to stop just before it reaches the child ?
- Motion part 10 (Graphical representation of motion)
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