Question 2
An object is projected at 20 ms-1 horizontally from the top of an 80 m high cliff. Calculate the:
(a) Time the object hits the ground;
(b) Range.
Observation
This was a popular question among candidates. Performance was average.
The expected answer is
(a)Calculation of the time the object hits the ground
(b)Calculation of the range R = ut
= 20 x 4
= 80 m