Question

Which among the following statement/s is definitely true about a body moving with positive
acceleration in a straight line?
Statement I: The velocity of body will increase with time
Statement II: The velocity of the body will be very high at the start of the motion
(A) Only I
(B) Only II
(C) Both I and II
(D) Neither I nor II​

Answer 1

Answer:

v=

change in time/

change in displacement

anda=

change in time

change in velocity

Speed is the magnitude of velocity.

There can be a case where there is change in direction but not in magnitude.

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Answer 2

Answer:

• (i) The body has a uniform velocity, if the velocity-time graph is a straight line parallel to the time-axis.

• (ii) If the velocity-time graph is inclined to the time-axis at certain angle, the body has uniform acceleration.