If a body covers equal distances in equal intervals of time, the motion is said to be:

1. uniform
2. non-uniform
3. oscillatory
4. rotatory

A boy goes from his house to school by bus at a speed of 20 km h^-1 and returns back through the same route at a speed of 30 km h^-1. The average speed of his journey is:

1. 24 km h^-1
2. 25 km h^-1
3. 30 km h^-1
4. 20 km h^-1

A cyclist taking a turn on a road is an example of …………… motion.

1. rectilinear
2. translatory
3. curvilinear
4. circular

In …………… motion, the distance of a point on the body remains constant from a fixed reference point.

1. vibratory
2. rectilinear
3. curvilinear
4. circular