Laws of conservation
1. Which of the following statements are true?
Which of the following is not true?
The potential energy of an object maximises as its velocity increases.
10kg object is raised to a height of 20m. What is the magnitude of its potential energy? (Assume g = 10 m/s2)
For an object of mass “m” in motion, its kinetic energy depends on the modulus of its acceleration vector.
When a body is falling freely under the influence of gravity, the kinetic energy remains constant.
Two identical balls of mass “m” are released from rest from a height “h” on two ramps of different inclinations as shown in the figure. Which of the following is true for this scenario? Assume all surfaces to be smooth.
Work is a _______
A force of 40 N acts on body of mass 5 Kg. What is the amount of work done if the total displacement is 2 m and is in the direction of the force applied?
The work done by a body while covering a vertical height of 5m is 50 kJ. By how much amount has the energy of the body changed?
The total energy change of a body which covers a vertical height is constituted completely by the potential energy change only when ______
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