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Second Law of Motion

a body is act...

Question

a body is acted upon by balanced forces 1).if it is in rest only 2). if it is moving with cons†an t speed 3). if it is not accelerating. why option (2). is incorrect

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Q. Choose the correct statement(s):
Statement 1: Unbalanced forces can change the direction of motion of a body.
Statement 2: A balanced force is required to accelerate the body.
Statement 3: An object moves with a uniform velocity when balanced forces are acting on it or if there is no net force acting on it.
Statement 4: Balanced force cannot bring an object at rest to motion.

Q. If a body is acted upon by a constant force then it will have a uniform _________.

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.

If a body is in motion is it necessary that it is being acted upon by a force

Q. Situation: A ball is moving down a slope with a steady speed. If it is moving with steady speed then the forces acting on the ball are balanced.
Question: Now if the force is balanced then there should be no net movement by the ball then why the ball is moving?

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