Check the only correct statement in the follo | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Velocity is a vector quantity,meaning it has both magnitude (speed) and direction. For velocity to be constant,both magnitude and direction must r

Vedclass · Accepted Answer

$A$ body has a constant speed but it can have a varying velocity.

Vedclass · Answer

(B) Velocity is a vector quantity,meaning it has both magnitude (speed) and direction. For velocity to be constant,both magnitude and direction must remain constant.If a body has a constant speed,its velocity can still vary if its direction changes. $A$ classic example is uniform circular motion,where the speed is constant,but the direction of motion changes at every point,resulting in a changing velocity and the presence of centripetal acceleration.Option $A$ is incorrect because constant velocity implies constant speed.Option $B$ is correct because a body moving in a circle at a constant speed has a varying velocity due to the continuous change in direction.Option $C$ is incorrect because a body with constant speed in a circular path experiences centripetal acceleration.Option $D$ is incorrect because if a force acts perpendicular to the displacement (like centripetal force),the work done is zero.

Check the only correct statement in the following:

Similar Questions

If the angular velocity of a merry-go-round is $60^o/s$ and you are $3.5\,m$ from the centre of rotation,your linear velocity will be

Angular speed of the hour hand of a clock in degrees per second is:

For a particle in uniform circular motion:

If a particle covers half the circle of radius $R$ with constant speed $v$,then:

In the case of uniform circular motion,which of the following physical quantities does not remain constant?

Vedclass Test Series

Exam Paper Generator

Online Exam Module