Physics (Essay) Paper 2 WASSCE (PC), 2020

Question 2

 

 

A missile is to be launched such that it drops in an enemy’s camp. If the maximum horizontal distance between the point of launch and the enemy’s camp is 7200 km, at what speed should the missile be launched so that it lands in camp?

 

Observation

 

This was a popular question among candidates. Many candidates failed to recognize that the correct formula to apply is


    Rmax = . Also, some did not correct 7,200 km to meters.

The expected answer is