44) A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection

45) In a simple harmonic motion, the position of equilibrium is always

46) If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is

47) The time period of a simple pendulum depends on i) mass of suspended particle ii) length of the pendulum iii) acceleration due to gravity The correct answer is

48) A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is