Question

which of the following statement is not true about an object performing uniform motion in a straight line.
a)The acceleration is always zero.
b)The distance covered and the displacement is always the same.
c)The speed and velocity are always same.
d)All a,b, and c are correct.​

Answer 1

Answer:

i think option "d" is the correct option.

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Answer 2

All a,b, and c are correct, for an object performing uniform motion in a straight line.

• The acceleration for an object moving in uniform motion is always zero as when an object is in linear uniform motion the velocity remains constant - equal distance covered in equal interval of time - Δd/Δt = constant.
• Hence, acceleration = 0 ( inital velocity = final velocity; rate of change in velocity = 0
• Distance = Displacement in uniform linear motion as the object is travelling in a straight line. The same displacement is covered in equal intervals of time.
• Velocity is constant i.e in terms of both direction and magnitude. Therefore, speed and velocity are always the same.