Physics
How is the velocity obtained from the displacement-time graph for a body moving with a varying speed in a fixed direction?
Answer
If a body moves with varying speed in a fixed direction i.e., with variable velocity, the displacement-time graph is not a straight line, but it is a curve. The velocity at any instant can then be obtained by finding the slope of the tangent drawn on the curve at that instant of time.
Related Questions
Draw a velocity-time graph for a body moving with an initial velocity u and uniform acceleration a. Use this graph to find the distance travelled by the body in time t.
The figure shows displacement-time graph of two vehicles A and B moving along a straight road. Which vehicle is moving faster? Give reason.
What can you say about the nature of motion of a body if its displacement-time graph is —
(a) a straight line parallel to time axis?
(b) a straight line inclined to the time axis with an acute angle?
(c) a straight line inclined to the time axis with an obtuse angle?
(d) a curve
State the type of motion represented by the following sketches in the figure.
Give example of each type of motion.
(a)
(b)
