Options:
- A. provide him a larger inertia
- B. decreases his inertia
- C. decreases his momentum
- D. increases his momentum
View Answer
D. increases his momentum
Physics
What is the angle of projection for which the range and maximum height become equal ?
Options:
- A. tan-1
- B. tan-1 4
- C. tan-1
- D. tan-1 2
View Answer
B. tan-1 4
When collision between the bodies in a system is inelastic in nature then for system ____________________?
Options:
- A. momentum changes but K.E remain conserve
- B. K.E changes but momentum remain conserve
- C. both momentum and K.E changes
- D. both momentum and K.E remain conserve
View Answer
B. K.E changes but momentum remain conserve
Distance covered by a freely falling body in 2 seconds will be__________________?
Options:
- A. 4.9 m
- B. 19.6 m
- C. 39.2 m
- D. 44.1 m
View Answer
B. 19.6 m
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 ?
Options:
- A. -1
- B. 1
- C. 2
- D. -2
View Answer
B. 1
Flight of a rocket in the space is an example of______________________?
Options:
- A. second law of motion
- B. third law of motion
- C. first law of motion
- D. law of gravitation
View Answer
B. third law of motion
Which of the following is not an example of projectile motion ?
Options:
- A. a gas filled ballon
- B. bullet fired from gun
- C. a football kicked
- D. a base ball shot
View Answer
A. a gas filled ballon
At which angle the range of the projectile is maximum____________________?
Options:
- A. 45
- B. 60
- C. 30
- D. none
View Answer
A. 45
The thrust on the rocket in the absence of gravitational force of attraction is__________________?
Options:
- A. Constant
- B. not constant
- C. constant if the rate of ejected gases is constant
- D. constant for short range rocket.
View Answer
A. Constant
Time rate of change of momentum is equal to____________________?
Options:
- A. force
- B. impulse
- C. velocity
- D. both A and C
View Answer
A. force