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 ?

Related Mcqs:

1. What is the shape of velocity, time graph for constant acceleration ?

   A. straight inclined line.
   B. parabola
   C. inclined curve
   D. declined curve

2. When the body moves with terminal velocity the acceleration in the body become_____________?

   A. 0
   B. Maximum
   C. Variable
   D. Infinite

3. The value of acceleration due to gravity is minimum on which of these planets?

   A. Mars
   B. Jupiter
   C. Mercury
   D. Neptune

   Submitted by: Abid Hussain

4. Terminal velocity of the body is directly proportional to the_______________?

   A. The radius of the body
   B. The diameter of the body
   C. Size of the body
   D. Square of the diameter of the body

5. The velocity of sound in air would become double than its velocity at 0°C at temperature ?

   A. 313°C
   B. 586°C
   C. 819°C
   D. 1172°C

6. The velocity of sound in air would become double than its velocity at 0°C at temperature________________?

   A. 313°C
   B. 586°C
   C. 819°C
   D. 1172°C

7. hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?

   WA. 180°
   B. 0°
   C. 90°
   D. 45°

8. Taking off rocket can be explained by __________________?

   A. 1st law of motion
   B. 2nd law of motion
   C. Law of conservation of momentum
   D. law of conservation of energy

9. Flight of a rocket in the space is an example of______________________?

   A. second law of motion
   B. third law of motion
   C. first law of motion
   D. law of gravitation

10. 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.