JEE Main · 2017 · 02 Apr 2017 · Offline · Kinematics

A body is thrown vertically upwards. Which one of the following graphs correctly represent the velocity vs time?

(A)(see structure)
✓ Correct
(B)(see structure)
(C)(see structure)
(D)(see structure)

Answer: (A)

Solution

Velocity is a vector. Taking upward as positive, a body thrown vertically up starts with velocity

+ v

, slows at the constant rate

- g

, becomes zero at the top of the flight and then grows more and more negative as it falls back. Plotted against time this is a single straight line of constant negative slope that crosses the time axis from positive to negative values.

JEE Main · 2017 · 02 Apr 2017 · Offline · Single correct option

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