Exam-style question
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What is the time of flight for a projectile launched at an angle of 45 degrees with an initial velocity of 30 m/s?.
- A.3.06 s
- B.4.24 s
- C.6.12 s
- D.2.12 s
Model answer
What a good answer should say
- 4.24 s.
- the correct option
Explanation
Why this works
The correct answer is 4.24 s. This supports Model projectile motion with constant vertical acceleration.
in Projectile motion because it uses the required mechanics relationship directly. The other options are less suitable because they confuse a different force, motion, energy, momentum, or materials concept.
Common mistake
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