First slide

Graphical representation-Motion in 1 d

Question

Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time t₁. Which graphs show an object whose speed is
increasing for the entire time interval between t₁ and t₂?

Moderate

A

graph I, only
B

graphs I and II, only
C

graphs I and III, only
D

graphs I, II and III

Solution

Acceleration is positive in all three graphs, so velocity increases in all three.

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