Question
Download Solution PDFA ball is thrown vertically upward with a speed of 30 m/s. The magnitude of its displacement after 4 s will be ______ (Take g = 10 m/s2.)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 40m.
Key PointsInitial velocity(u) = 30m/s
Acceleration due to gravity(g)= 10 m/s2
Time (t) = 4 s
Using the equation,
S = Ut + 1/2 × a× t2
S = 30 × 4 + 1/2 × (-10) × 4× 4
= 120 - 80
= 40 m
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