Which of the following four statements is fal | vedclass

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(B) Velocity is a vector quantity defined as $v = \frac{dr}{dt}$,which includes both speed (magnitude) and direction. If a body has a constant velocit

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$A$ body can have a constant velocity and still have a varying speed.

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(B) Velocity is a vector quantity defined as $v = \frac{dr}{dt}$,which includes both speed (magnitude) and direction. If a body has a constant velocity,both its speed and direction must remain unchanged. Therefore,it is impossible for a body to have a constant velocity while its speed varies. Statement $(b)$ is false because constant velocity implies constant speed and constant direction. Statement $(a)$ is true (e.g.,an object thrown vertically upward at its highest point has zero velocity but an acceleration of $g$). Statement $(c)$ is true (e.g.,uniform circular motion). Statement $(d)$ is true (e.g.,projectile motion where acceleration is constant $g$ downwards,but the direction of velocity changes).

Which of the following four statements is false?

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