Advertisements
Advertisements
Question
A ball of mass 1 kg and another of mass 2 kg are dropped from a tall building whose height is 80 m. After, a fall of 40 m each towards Earth, their respective kinetic energies will be in the ratio of ______
Options
`sqrt2` : 1
1 : `sqrt2`
2 : 1
1 : 2
Solution
A ball of mass 1 kg and another of mass 2 kg are dropped from a tall building whose height is 80 m. After, a fall of 40 m each towards Earth, their respective kinetic energies will be in the ratio of 1 : 2.
APPEARS IN
RELATED QUESTIONS
What is the significance of energy? Differentiate between commercial and non-commercial sources of energy.
What problems are being faced by the power sector in India?
Discuss the reforms which have been initiated recently to meet the energy crisis in India.
Explain the various sources of energy in Tamil Nadu.
A bob of mass m is attached to one end of the rod of negligible mass and length r, the other end of which is pivoted freely at a fixed center O as shown in the figure. What initial speed must be given to the object to reach the top of the circle? (Hint: Use law of conservation of energy). Is this speed less or greater than the speed obtained in section 4.2.9?
Which of the following statements is true for commercial sources of energy?
Which of the following sector was the largest consumer of commercial energy in 1953-54?
Compact fluorescent lamp (CFL) consumes ______ percent less power than ordinary bulb?
What are the basic sources of generating power?
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.
