List of practice Questions

An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth.

Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back to point C in another 1 minute. What are Joseph’s average speeds and velocities in jogging (a) from A to B and (b) from A to C?

State which of the following situations are possible and give an example for each of these: 

1. an object with a constant acceleration but with zero velocity 
2. an object moving with an acceleration but with uniform speed. 
3. an object moving in a certain direction with an acceleration in the perpendicular direction.