1.

What does the following velocity-time graphs represent?Explain the nature of motion of the body in each case.

Answer»

(i) It represents that the body has uniform velocity throughout the motion.

(ii) It represents that the body has some initial velocity equal to OA and is moving with uniform acceleration.

(iii) It represents that the body has an initial velocity equal to OA and is moving with uniform retardation (negative acceleration). Example, a body thrown vertically upwards.

(iv) It represents that the body an initial velocity to OA and is moving with uniform retardation along AB. The portion BC of the graph shows that body is uniformly accelerated.

(v) AB Portion of the graph shows that the body has some initial velocity equal to OA and is moving with uniform acceleration, BC portion of the graph shows the uniform retardation of the body. CD portion shows that the body is moving with uniform velocity, DEF portion of the graph show that the velocity of the body is variable, i.e., it is accelerated and retarded.



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