Q57 · Practice questionComplex familiar4 marks
QUESTION 57 (4 marks)
A ball is launched from level ground at and above the horizontal, as shown. Neglect air resistance. Determine (a) the time of flight and (b) the horizontal range.
WORKED SOLUTION
4 marksPractice marking scheme
ANSWER
; .
Worked solution
Resolve the launch velocity:
For a return to the launch height,
Then
Correctly resolves the initial velocity.
Determines the time of flight.
Uses horizontal motion correctly.
Obtains the correct range with units.
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