MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Third Law of Motion

To keep a bod...

Question

To keep a body moving with constant velocity on a frictionless surface, an external force:

A

should act continuously

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

should be a variable force

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

is not required

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

should act opposite to the direction of motion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C is not required
The question is based on Newton's first law of motion. There is no external force required in case of constant velocity, where frictional forces are zero.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A body of mass

10 kg

is moving with a constant velocity

10 m/s

. When a constant force acts for

4 s

on it, it moves with a velocity

2 m/s

in the opposite direction. The magnitude of force acting on the body is

Q. A body of mass

10 kg

is moving with a constant velocity

10 m/s

. When a constant force acts for

4 s

on it, it moves with a velocity

2 m/s

in the opposite direction. The magnitude of force acting on the body is

State whether true or false.

If a body is moving with a constant speed along a straight line, then in order to change its direction of motion, an external force or its component has to act in a direction normal to the direction of motion.

Q. Assertion :An external force is not necessarily required to keep a body in uniform motion. Reason: If the net external force is zero, a body at rest continues to remain at rest and a body in motion countinues to move with a uniform velocity.

Q. A body of mass 40 gram is moving with a constant velocity of 20

m s^{-}

^{1}

on a horizontal frictionless table. The force acting on the body in horizontal direction is:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Third Law of Motion

PHYSICS

Watch in App

explore_more_icon

Explore more

Third Law of Motion

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon