The range of the projectile at 30 deg and 60 deg are__________________? A. equal to 45 deg B. equal to 90 degC. equal to each other D. none of the above

The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________? A. 1 N B. 10 N C. 100 N D. none

The trajectory (or path) of a projectile is_________________? A. straight lineB. parabola C. hyperbola D. circle

The distance covered by a body in time t starting from rest is__________________? A. at2/2 B. Vt C. a2t/2 D. at2

When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then…

The thrust on the rocket in the absence of gravitational force of attraction is__________________? A. Constant B. not constant C. constant if the rate of ejected gases is constant D. constant for short range rocket.

Which of the following is not an example of projectile motion ? A. a gas filled ballon B. bullet fired from gun C. a football kicked D. a base ball shot

The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ? A. -1B. 1 C. 2 D. -2

When collision between the bodies in a system is inelastic in nature then for system ____________________? A. momentum changes but K.E remain conserveB. K.E changes but momentum remain conserve C. both momentum and K.E changes D. both momentum and K.E…

A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ? A. 14 m B. 20 m C. 5 m D. 25 m