Is velocity-time graph different from speed-time graph?

A velocity-time graph shows the speed and direction an object travels over a specific period of time. Velocity-time graphs are also called speed-time graphs. The vertical axis of a velocity-time graph is the velocity of the object.

What will a speed-time graph look like if it were moving at a constant speed?

A straight horizontal line on a speed-time graph means that speed is constant. It is not changing over time. A straight line does not mean that the object is not moving! This graph shows increasing speed.

What does the velocity time graph gives?

The area under the velocity/time curve is the total displacement. If you divide that by the change in time, you will get the average velocity.

What does slope of vt graph give?

The rate of change of velocity with time is acceleration. When we plot velocity along the Y-axis and time along X- axis, the slope of the velocity time graph gives the acceleration produced.

Which velocity time graph is not possible?

(d)
Solution: (d) Particle cannot possess two velocities at a single instant so graph (d) is not possible.

Can speed increase while velocity decreases?

Explanation: Speed increases when velocity and acceleration have the same sign. In section A, the velocity is positive because it’s above the x axis and the slope is positive, meaning that the acceleration is positive.

When the speed of an object is constant with time then speed-time graph will be horizontal line?

We have seen that a horizontal line on a speed–time graph can show a constant speed of three meters per second. And we have also seen that a horizontal line on a speed–time graph can show a constant speed of zero meters per second. A horizontal line on a speed–time graph can in fact show any constant speed.

How would the shape of the graph change when the object is changing velocity?

If the velocity is changing, then the slope is changing (i.e., a curved line). If the velocity is positive, then the slope is positive (i.e., moving upwards and to the right). This very principle can be extended to any motion conceivable.

How can you tell from a velocity time graph that the moving object has changed direction?

And finally, if a line crosses over the x-axis from the positive region to the negative region of the graph (or vice versa), then the object has changed directions.

What happens to velocity when an object changes direction?

Any time a moving object changes direction, its velocity changes and it is accelerating.