JEE Main Physics question

Physics Motion in a Straight Line JEE Main

A ball is thrown vertically upward. Ignoring air resistance, which one of the following plots represents the velocity–time plot for the period the ball remains in air?

(A)A single straight line with constant negative slope, starting at at launch and ending at at landing, crossing zero at the instant of maximum heightCorrect
(B)A "V"-shaped graph: decreasing to zero then increasing back to (this is the speed–time graph, not velocity)
(C)A symmetric "mountain" shape: rising from 0 to a peak and back to 0
(D)A smooth parabolic hump, symmetric about the midpoint

Answer: (A)

Solution

With constant acceleration throughout the flight (both rise and fall), is linear in for the entire duration — a single straight line of constant slope , starting at and

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Question ID VK-151993