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BidishaKashayap1333
@bidishakashayap1333
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Joined: Oct 11, 2021
Last seen: Jul 27, 2023
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Topics: 2174 / Replies: 0
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Topic
A man drops a 10 kg rock from the top of a 5m ladder. What is its speed just before it hits the ground? What is its kinetic energy when it reaches the ground?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 203
Topic
On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150kg, calculate the work done by the brakes.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 277
Topic
A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2s?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 246
Topic
Two objects having equal masses are moving with uniform velocities of 2 m/s and 6 m/s respectively. Calculate the ratio of their kinetic energies.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 196
Topic
Find the momentum of a body of mass 100g having a kinetic energy of 20J.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 126
Topic
A ball of mass 200g falls from a height of 5 meters. What is its kinetic energy when it just reaches the ground?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 233
Topic
Give one example each in which a force does (a) positive work (b) negative work (c) zero work
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 70
Topic
How does the kinetic energy of a moving body depend on its (a) speed (b) mass
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 90
Topic
Write the formula for work done on a body when the body moves at an angle to the direction of force. Give the meaning of each symbol used.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 215
Topic
A boy throws a rubber ball vertically upwards. What type of work, positive or negative is done: (a) by the force applied by the boy? (b) by the gravitational force of earth?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 88
Topic
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 194
Topic
What are the quantities on which the amount of work done depends? How are they related to work?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 267
Topic
Work is measured as a product of ………. and ……….. (b) The work done on a body moving in a circular path is
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 151
Topic
What kind of energy is possessed by the following: (a) a stone kept on roof-top (b) a running car (c) water stored in the reservoir of a dam
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 57
Topic
What happens to the potential energy of a body when its height is doubled?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 196
Topic
State whether the following statement is true or false: The potential energy of a body of mass 1 kg kept at a height of 1m is 1J.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 151
Topic
A load of 100 kg is pulled up by 5 m. Calculate the work done.
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 153
Topic
Is potential energy a vector or a scalar quantity?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 262
Topic
What is the kinetic energy of a body of mass 1 kg moving with a speed of 2 m/s?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 79
Topic
Two bodies A and B of equal masses are kept at heights of h and 2h respectively. What will be the ratio of their potential energies?
4 years ago
Forum
Work, Power And Energy
Replies: 0
Views: 153
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