A. H=gT2/8
B. H=8T2/g
C. H=8g/T2
D. H=gT2
0
Taking off rocket can be explained by __________________?
0
What is the angle of projection for which the range and maximum height become equal ?
A. 1st law of motion
B. 2nd law of motion
C. Law of conservation of momentum
D. law of conservation of energy
0
Distance covered by a freely falling body in 2 seconds will be__________________?
A. tan-1 ¼
B. tan-1 4
C. tan-1 ½
D. tan-1 2
0
Flight of a rocket in the space is an example of______________________?
A. 4.9 m
B. 19.6 m
C. 39.2 m
D. 44.1 m
0
At which angle the range of the projectile is maximum____________________?
A. second law of motion
B. third law of motion
C. first law of motion
D. law of gravitation
0
Time rate of change of momentum is equal to____________________?
A. 45
B. 60
C. 30
D. none
0
Why Ballistic missile fails in some circumstances of precision ?
A. force
B. impulse
C. velocity
D. both A and C
0
A body is moving with uniform velocity. Its______________________?
A. due to their shape
B. due to air resistance
C. due to angle of projection
D. all of these
0
When velocity time graph is a straight line parallel to time axis then__________________?
A. speed changes
B. acceleration changes
C. direction of motion changes
D. displacement from origin changes
Download App