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What causes variation in velocity of a

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Figure. Shows displacement – time curves I and II. What conclusions do you draw from these

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Displacement of a particle is given by the expression `x = 3t^2 + 7t – 9`, where x is in meter and t is in seconds. What is

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A particle is thrown upwards. It attains a height (h) after 5 seconds and again after 9s comes back. What is the speed of the particle at a height

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A police jeep on a petrol duty on national highway was moving with a speed of 54km/hr. in the same direction. It finds a thief rushing up in a car at a rate of 126km/hr in the same direction. Police sub – inspector fired at the car of the thief with his service revolver with a muzzle speed of 100m/s. with what speed will the bullet hit the car of

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Establish the relation `Snth =u +a/2(2n-1)` where the letters have their usual

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A stone is dropped from the top of a cliff and is found to ravel 44.1m diving the lastsecond before it reaches the ground. What is the height of the cliff? `g =

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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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Draw displacement time graph for a uniformly accelerated motion? What is its

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The displacement x of a particle moving in one dimension under the action of constant force is related to the time by the equation where x is in meters and t is in seconds. Find the velocity of the particle at `(1) t = 3s (2) t =

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A balloon is ascending at the rate of 4.9m/s. A pocket is dropped from the balloon when situated at a height of 245m. How long does it take the packet to reach the ground? What is its final

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A car moving on a straight highway with speed of 126km/hr. is brought to Two balls of differevelocitystop within a distance of 200m. What is the retardation of the car (assumed uniform) and how long does it take for the car to

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Establish `s=ut+1/2at^2` from velocity time graph for a uniform accelerated

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(a) Define the term relative velocity?(b) Write the expression for relative velocity of one moving with respect to another body when objects are moving in same direction and are moving in opposite directions?(c) A Jet airplane traveling at the speed of 500km/hr ejects its products of combustion at the speed of 1500km/h relative to the Jet plane. What is the speed of the latter with respect to an observer on the

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Define (i) `v = u + at` (ii) `V^2 – u^2 = 2as` by calculus

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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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