What are the uses of graphs?

Give one example in which the velocity of a body is continuously changing. State whether its speed can remain constant?

A trolley while going down an inclined plane, has an acceleration of $2 \mathrm{cm}/{\mathrm{s}}^2$. What will be its velocity $3 \mathrm{s}$ after the start?

Give two examples each of scalar quantity and vector quantity.

Initial velocity, final velocity, distance, acceleration, average velocity.

Plot a velocity-time graph for a body moving under a uniform acceleration. How will you find out the distance from this graph?

What can you say about the motion of a body from the following distance-time graphs?

A car starts from rest and moves with a uniform acceleration of $4 \mathrm{m}/{\mathrm{s}}^2$. Find the final velocity of the car if it travels a distance of $800 \mathrm{m}$.