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Can speed of an object be negative?

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Under what condition the displacement and the distance of a moving object will have the same

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What is the shape of the displacement time graph for uniform linear

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Figure shows a displacements time graph. Comment on the sign of velocities at point P, Q, R, S and

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What is “Trajectory of a

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A projectile is fired at an angle of `30^o` with the horizontal with velocity 10m/s. At what angle with the vertical should it be fired to get maximum

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What is the value of angular speed for 1

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Give an example of a body moving with uniform speed but having a variable velocity and an acceleration which remains constant in magnitude but changes in

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What is the direction of centripetal force when particle is following a circular

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Two vectors `vecA` and `vecB` are perpendicular to each other. What is the value of `vecA .vecB`

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What will be the effect on horizontal range of a projectile when its initial velocity is doubled, keeping the angle of projection

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What will be the effect on maximum height of a projectile when its angle of projection is changed from `30^o` to `60^o`, keeping the same initial velocity of

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What is the angular velocity of the hour hand of a

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If force is acting on a moving body perpendicular to the direction of motion, then what will be its effect on the speed and direction of the

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The two ends of spring – balance are pulled each by a force of 10kg.wt. What will be the reading of the

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A lift is accelerated upward. Will the apparent weight of a person inside the lift increase, decrease or remain the same relative to its real weight? If the lift is going with uniform speed,

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A thief jumps from the roof of a house with a box of weight W on his head. What will be the weight of the box as experienced by the thief during

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Which of the following is scalar quantity? Inertia, force and linear

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Action and reaction forces do not balance each other.

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Why is it desired to hold a gun tight to one’s shoulder when it is being

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