At what speed a body of mass 1 kg will have a kinetic energy of 2 J?
4ms−1.
When the velocity of an Moving on object increases by 4 times what should be the change in its kinetic energy?
P is proportional to the square root of kinetic energy. Since 2 and m are considered as constants. Therefore, we can say that kinetic energy increased by four times. Therefore, when the kinetic energy increases by four times, then the moment will increase by two times.
What change should be expected in the velocity of a body to maintain the same kinetic energy if its mass is increased sixteen times how?
This is the answer: body’s speed must be reduced 4 times to maintain the same kinetic energy.
What change should be affected in the velocity?
Kinetic energy is directly proportional to the product of mass and square of the velocity of the body. Kinetic energy increases with an increase in mass; to keep it the same to its initial value, we have to reduce the body’s velocity.
What should be the change in velocity?
∴ The velocity of a body should be halved, if its mass is increased by four times for the same K.E. of the body. Was this answer helpful?
How much work is needed to be done on a ball of mass 50 gram to give it a momentum of 5 kgm s?
How much work is needed to be done on a ball of mass 50 g to give it a momentum of 5 kg m s-12 Ans. 250 J.
How much work is needed to be done on a ball of mass 50g to give it a momentum of 500 g/cm s?
5×104J.
How much work is needed to be done on a ball of mass?
Hence, work needed to be done on a ball of mass 50g to give it a momentum of 500gcms−1 will be 25×10−5J.
Why does mass change with velocity?
As an object increases in speed, so does the amount of energy that it has, this energy is what we refer to as ‘the increase in mass’ (just remember, this is inertial mass). Since an object has infinite kinetic energy when it approaches the speed of light, it therefore has infinite mass as well.
What will be the change in Ke if the velocity increases to 4 times its original value?
If KE increases to 4 times its initial value , momentum increases to 2 times its initial value. Hence final momentum is 100% more than the initial momentum. The momentum of a body increases by 20%.
Does the charge of a body change with speed like its mass?
Why do charge on an object remains unaffected by the motion of the object? Unlike mass, the charge on an object is said to be unaffected by the motion of the object.
What is the effect of the change of mass with its speed?
Mass doesn’t affect speed directly. It determines how quickly an object can change speed (accelerate) under the action of a given force. Lighter objects need less time to change speed by a given amount under a given force.