Question

A particle is moving in xy -plane at 2 m/s along X-axis. 2 second later, its velocity is 4 m/s in direcion making 60° with positive x-axis. Its average acceleration for this period of motion is​

Answer 1

Let us consider an object moving with uniform speed v from its initial position S1 to final positions S2 in time t1 and t2.

then, uniform speed =Total DistanceTotal Time

V=S2−S1t2−t1

S2−S1=V(t2−t1) …………………….(1)

The equation (1) gives the relation between distance, time and average speed. Let us now plot a distance-time graph for the above illustration. A distance time graph is a line graph showing the variation of distance with time. In a distance-time graph, time is taken along x-axis and distance along y-axis.