Advertisements
Advertisements
Question
A body of mass 1 kg is thrown upwards with a velocity of 20 ms−1. It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction?.
Options
20 J
30 J
40 J
10 J
Solution
20 J
APPEARS IN
RELATED QUESTIONS
What are the three basic sources of generating power?
What do you mean by transmission and distribution losses? How can they be reduced?
A uniform force of `(2hati + hatj)` N acts on a particle of mass 1 kg. The particle displaces from position `(3hatj + hatk)` m to `(5hati + 3hatj)` m. The work done by the force on the particle is ______
A body of mass 4 m is lying in xy-plane at rest. It suddenly explodes into three pieces. Two pieces each of mass m move perpendicular to each other with equal speed v. The total kinetic energy generated due to explosion is ______
A particle is placed at the origin and a force F = kx is acting on it (where k is a positive constant). If U(0) = 0, the graph of U(x) versus x will be (where U is the potential energy function)
Define the following:
loss of kinetic energy in an inelastic collision.
Which of the following statements is true for commercial sources of energy?
Which of the following is a non-conventional source of energy?
______ with the healing power of nature as it assumes that all healing powers are within our body.
The ______ is usually instituted via law and is typically applied to necessary goods like food, rent, and energy sources in order to ensure that everyone has access to them.
