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Subjects
Science CBSE
Class 9
Work and energy
Textbook questions
51.
NCERT Exemplar I
Exercise condition:
2
m.
1
.
When a body falls freely towards the earth, then its total energy
increases
remains constant
decreases
first increases and then decreases
2
.
A car is accelerated on a levelled road and attains a velocity \(4\ times\) of its initial velocity. In this process the potential energy of the car
becomes twice to that of initial
becomes 4 times that of initial
does not change
becomes 16 times that of initial
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