What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?
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The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion
v2 – u2 = 2 a.s this give s = v2 - u2 / 2 a F = m a we can write work done (W) by this force F as W = m...
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An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
The object is in motion, so its energy = kinetic energy = 1 /2 mv2 The kinetic energy of the object, when it comes to rest = 0. Work done on object...
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According to the third law of motion when we push on an object, the object pushes back on us with an equal and opposite force.
The truck has a large mass. Therefore, the static friction between the truck and the road is also very high. To move the car, one has to apply a force...
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Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?
(c) It always goes away from the earth
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Classify the following as motion along a straight line, circular or oscillatory motion:
(i) Motion of your hands while running – Oscillatory motion. (ii) Motion of a horse pulling a cart on a straight road – Straight line motion. (iii) Motion of a child in...
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An object is released from rest. The time it takes to fall through a distance h and the speed of the object,
(a) the measured times are same (b) the measured speeds are same EXPLANATION: The time of fall t = √(2h/g) and the final speed v=√(2gh). The time period of the pendulum clock T=2π√(l/g)....
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A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away
(d) first increases then decreases. EXPLANATION: The parallel beam of light converges at the focus on the other side and then diverges. Hence till the person moves to the focus the intensity...
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A parallel beam of light is incident on a converging lens parallel to its principal axis. As one
(a) remains constant
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If the speed of a rod moving at a relativistic speed parallel to its length is doubled,
(c) the length will decrease (d) the mass will increase.
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An object is released from rest. The time it takes to fell through a distance h and the speed of the object as
(a) the measured times are same (b) the measured speeds are same EXPLANATION: The time of fall t = √(2h/g) and the final speed v=√(2gh). The time period of the pendulum clock T=2π√(l/g). If the...
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