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Newton's Laws for System of Particles

Does the kine...

Question

Does the kinetic energy of an object depend on its direction of motion?

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Solution

The kinetic energy of an object is the energy it has because of its motion.
The energy is a scalar quantity., so it doesn't depend on the direction of motion.

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Q. How does the kinetic energy of a moving body depend on its (i) speed, and (ii) mass?

Write detailed answers?

a. Explain the difference between potential energy and kinetic energy.

b. Derive the formula for the kinetic energy of an object of mass m, moving with velocity v.

c. Prove that the kinetic energy of a freely falling object on reaching the ground is nothing but the transformation of its initial potential energy.

d. Determine the amount of work done when an object is displaced at an angle of 30^o with respect to the direction of the applied force.

e. If an object has 0 momentum, does it have kinetic energy? Explain your answer.

f. Why is the work done on an object moving with uniform circular motion zero?

Does kinetic energy depend upon the direction of motion? Can kinetic energy be negative?

Kinetic energy of a body depends upon the direction of motion.

If the velocity of an object doubles, then how does its kinetic energy change?

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