Physics, asked by SriAnitha, 1 year ago

If a body is moving with constant speed, its acceleration is _________________. 1) must be zero 2) may be variable 3) may be uniform 4) both 2 and 3 ( please answer and explain)

Answers

Answered by Abehttt

It must be zero because a body is moving with a constant speed means a body is moving in a uniform motion and in uniform motion both speed and time are equal.

Jades23: Bit 4.....Speed may be constant but velocity can be variable and so acceleration may be variable or uniform

THERASABISHMA: hmmm

Abehttt: okk

SriAnitha: right....acc is variable......but how

SriAnitha: jades.....i'm asking u

Jades23: Because velocity may change constantly with time or may not be if it will not change in a constant rate thn simply acceleration will be variable.......Sry fr late reply

Answered by CarliReifsteck

Answer:

If a body is moving with constant speed, its acceleration is must be zero.

(1) is correct

Explanation:

The acceleration is the rate of change of velocity. It's unit is m/s².

The formula of acceleration is defined as:

$a = \dfrac{v_{f}-v_{i}}{t}$

If a object is moving with constant speed that means the velocity will not change with the time.

The change in velocity = 0

So, the acceleration is

$a = \dfrac{0}{t}=0$

Hence, If a body is moving with constant speed, its acceleration is must be zero.

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