Question

Guess Paper (Science)
(25)
C. Value -Based Questions
(1x4)
23. If m' and m2 are the masses constituting the rigid body, bound by some internal forces so that the
distance between the masses remain constant then
(i) Define centre of mass.
(ii) Derive expression for position vector of centre of mass.
D. Long-Answer Type Questions
(3x5)
24. Derive the expression for path/trajectory time of flight (T) and horizontal range (R) when a body
is projected from a certain height in the direction of horizontal
Or
What is centripetal acceleration? Derive expression for it.
25. Discuss S.H.M as a special case of circular motion and derive the expression for displacement
and velocity of a body executing S.H.M
Or
Derive the expression for the displacement of a transverse progressive wave.
26. Discuss and derive Bernoulli's equation.
Or
What are the modes of heat transfer? Discuss
(1) Conduction
(ii) Convection & Radiation​

Answer 1

Answer:

please follow and brainlist me