Which of the following statement is false?

1. If speed is zero , it's velocity also must be zero.

2. if velocity is zero , then it's speed need not be zero

3. If speed is constant , then it's speed must be constant .

4. If velocity is constant , then it's speed must be constant.

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Solution

object can have varying velocity if its speed is constant. Speed is the measure of how much distance an object has traveled in a certain amount of time with no regard to direction, but velocity is the measure of an object's displacement in a certain amount of time with regard to direction.

so the false statement is
speed is constant.then velocity must be constant.
i think the third option you mean this.

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Similar questions

Mark the correct statement(s)
(1) If speed of a body is varying, its velocity must be varying and it must have non-zero acceleration.

(2) If velocity of a body is varying, its speed must be varying.

(3) A body moving with varying velocity may have constant speed.

(4) A body moving with varying speed may have constant velocity, if its direction of motion remains constant.

Which of the following statement must always be true?

I.If an objects acceleration is zero, then its speed must remain constant.

II. If an objects acceleration is constant, then it must move in a straight line.

III. If an objects speed remains constant, then its acceleration must be zero.

Read each statement below carefully and state with reasons and examples, if it is true or false;
A particle in one-dimensional motion
a) with zero speed at an instant may have non-zero acceleration at that instant
b) with zero speed may have non-zero velocity,
c) with constant speed must have zero acceleration,
d) with positive value of acceleration must be speeding up.

Q. Read each statement below carefully and state with reasons and examples, if it is true or false:
A particle in one-dimensional motion
(a) with zero speed at an instant may have non-zero acceleration at that instant.
(b) with zero speed may have non-zero velocity.
(c) with constant speed must have zero acceleration.
(d) with positive value of acceleration must be speeding up.

When the speed is constant the velocity may not be constant but when the velocity is constant the speed must be constant.why this happens?

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Which of the following statement is false? 1. If speed is zero , it's velocity also must be zero. 2. if velocity is zero , then it's speed need not be zero 3. If speed is constant , then it's speed must be constant . 4. If velocity is constant , then it's speed must be constant.

Which of the following statement is false?

1. If speed is zero , it's velocity also must be zero.

2. if velocity is zero , then it's speed need not be zero

3. If speed is constant , then it's speed must be constant .

4. If velocity is constant , then it's speed must be constant.