Question

pls answer this and little bit long answer pls​

Answer 1

Answer:

Q2:-

The characteristics of distance-time graph for an object moving with uniform speed are :

(i) It is always a straight line.

(ii) The uniform speed of the moving object is equal to the slope of the straight line plotted.

Q3:-

Features of the graphs:-

When an object is moving with a constant velocity, the line on the graph is horizontal. When the horizontal line is at zero velocity, the object is at rest. When an object is undergoing constant acceleration, the line on the graph is straight but sloped.

Curved lines on velocity-time graphs also show changes in velocity, but not with a constant acceleration or deceleration. The diagram shows some typical lines on a velocity-time graph.

Q5:-

(i) When the body is stationary: When the body does not move with respect to time, the curve in the distance-time graph becomes parallel to the time axis. We can draw the distance-time graph for the stationary body as shown in the following figure.

(ii) When body is moving in uniform speed:

We know that the slope of the distance-time graph is the velocity of the body. That is, we can write, v=Δx/Δt

Since the speed of the body is uniform, the slope of the distance-time graph does not change that is constant. Therefore, the distance-time graph of the body moving with uniform speed is straight line passing through the centre as shown in the figure below,

(iii) When the body is moving in non- non-uniform speed and uniform acceleration:

As we know, a=dv/dt=d²x/dt²

Therefore, the distance-time graph will be the exponential rise with respect to time as shown in the figure below.