If the uncertainty in position and momentum are equal, the uncertainty in velocity will
be:

Which of the following statements about average velocity is NOT correct?

A ball is dropped from rest. What will be the velocity of the ball after falling 20 m? (Take g = 10 m/s²)

If the acceleration of a body is halved and mass remains constant, the force will

Which of the following statements is/are NOT true regarding the work done by a constant force acting on a body?
(i) The work done by the force can never be negative.
(ii) If the direction of the force and displacement of the body is same, the work done will be positive.
(iii) The S.l. unit of work done is Pascal.

Which of the following is/are true about the acceleration due to gravity?
(i) The value of acceleration due to gravity depends on the mass of the object falling under the effect of gravity.
(ii) The value of acceleration due to gravity is universally constant.

From a distance-time graph, an object moves from point A to point B, covering a distance (s₂ − s₁) in time (t₂ − t₁). Which of the following correctly represents the speed (v) of the object?

A ball of mass 50 grams is moving with a velocity of 15 m/s. What is its kinetic energy?

The kinetic energy of an object is derived using which of the following equations of motion?