Plot velocity-time graph of a body.

(i) moving with a uniform retardation.

(ii) moving with a variable acceleration.

(i) If the velocity-time graph of an object is parallel to X-axis, then what does it mean? Can it be parallel to Y-axis?

(ii) What type of motion is represented by each one of the following graphs?

(iii) A bus increases its speed from 36 km/h to 54 km/h in 10 s. Find its acceleration.

Study the velocity-time graph and calculate.

(i) the acceleration from A to B.

(ii) the acceleration from B to C.

(iii) the distance covered in the region ABE.

(iv) the average velocity from C to D.

(v) the distance covered in the region BCFE.

A body starts to slide over a horizontal surface with an initial velocity of 0.5 m/s. Due to friction, its velocity decreases at the rate 0.105 m/s². How much time will it take for the body to stop?

Look at the figure below and answer the following questions:

(i) Name the kind of motion of the stone.

(ii) It this an example of accelerated motion? Why?

(iii)Name the force that keeps the stone in its path.

(iv) What is the direction of this force? Draw it in your answer sheet.