Question

Q5.If the mass of a body is doubled
and its velocity becomes half, then
the linear momentum of the body
will(a) remain same(b) become
double(c) become half(d) become
four times. *​

Answer 1

a)= Kinetic energy of a body of given mass, is directly proportiional to its square of its velocity. When momentum is doubled, mass remaining constant, this means velcity is doubled. Hence, kinetic energy becomes 22=4 times i.e. say from 100 units to 400 units....