Definition
The velocity of a moving particle is the rate of its displacement or the rate of change of its displacement with time. Therefore, velocity possesses both magnitude and direction and hence, is a vector. A particle is said to be moving with uniform velocity when it is..
The velocity of a moving particle is the rate of its displacement or the rate of change of its displacement with time. Therefore, velocity possesses both magnitude and direction and hence, is a vector. A particle is said to be moving with uniform velocity when it is..Expression for Centripetal Force
Consider a particle moving in a circle or radius r with a constant speed ..
Momentum
A cricket ball and a tennis ball are moving with a constant velocity v. You have to apply more force to stop the cricket ball than you have to apply to stop the tennis ball, since the mass of the cricket ball is more than that of the tennis ba..
Mass is the Quantitative Measure of Inertia
If you want to start a car by pushing it, you find that it takes a very large force to overcome its inertia. On the other hand, only a small force is needed to start a child's express wagon. The difference between the car and the express wagon is the difference in mass. The car has a large mass, w..
Diffusibility
The molecules of the gas are in constant motion, at very high velocity. There is a great amount of intermolecular space between the molecules. When two gases are mixed, particles of one gas can easily pass through the intermolecular space of the other gas. As a result both the ..
Question 48
Question: The table below shows the distance travelled by objects A, B and C during each second. (i) Which object is moving with constant speed? Give a reason for your answer. (ii) Which object is moving with constant acceleration? What is the value of this acce..
Question: The table below shows the distance travelled by objects A, B and C during each second. (i) Which object is moving with constant speed? Give a reason for your answer. (ii) Which object is moving with constant acceleration? What is the value of this acce..Simple Pendulum and Restoring Force
Simple Pendulum and Restoring Force - In the previous chapters we studied the motion of a body moving with uniform speed in a straight line and also learnt to calculate the distance traveled by a body in any given time. We then observed that the bodies do not always move with uniform ..
Solution:
Mass of the body (m) = 5 kg Velocity of the body (v) = 15 m/s Kinetic energy Kinetic energy = 562.5 J 02. A dog of mass 20 kg is running at a constant speed of 12 m/s. Calculate the kinetic energy of the dog while it is runni..
Mass of the body (m) = 5 kg Velocity of the body (v) = 15 m/s Kinetic energy Kinetic energy = 562.5 J 02. A dog of mass 20 kg is running at a constant speed of 12 m/s. Calculate the kinetic energy of the dog while it is runni..Characteristics of Wave Motion
Characteristics of Wave Motion - Wave motion is the propagation of a disturbance produced in a medium by the repeated periodic motion of the particles of the medium. It is only the energy of the disturbance that moves forward without any mass transfer. In an elastic medium, the frequency and the am..
Effect of pressure
Therefore, Newton-Laplace formula can be written as If the temperature remains constant, then according to Boyle's law, PV remains constant. Thus, changes in pressure are accompanied by changes in volume, such that p/q is held a constant. Hence, the velocit..
Therefore, Newton-Laplace formula can be written as If the temperature remains constant, then according to Boyle's law, PV remains constant. Thus, changes in pressure are accompanied by changes in volume, such that p/q is held a constant. Hence, the velocit.. Result
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