A. due to their shape
B. due to air resistance
C. due to angle of projection
D. all of these
0
Time rate of change of momentum is equal to____________________?
0
At which angle the range of the projectile is maximum____________________?
A. force
B. impulse
C. velocity
D. both A and C
0
Flight of a rocket in the space is an example of______________________?
A. 45
B. 60
C. 30
D. none
0
Distance covered by a freely falling body in 2 seconds will be__________________?
A. second law of motion
B. third law of motion
C. first law of motion
D. law of gravitation
0
What is the angle of projection for which the range and maximum height become equal ?
A. 4.9 m
B. 19.6 m
C. 39.2 m
D. 44.1 m
0
Taking off rocket can be explained by __________________?
A. tan-1 ¼
B. tan-1 4
C. tan-1 ½
D. tan-1 2
0
Which shows the correct relation between time of flight T and maximum height H ?
A. 1st law of motion
B. 2nd law of motion
C. Law of conservation of momentum
D. law of conservation of energy
0
What is the shape of velocity, time graph for constant acceleration ?
A. H=gT2/8
B. H=8T2/g
C. H=8g/T2
D. H=gT2
0
When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?
A. straight inclined line.
B. parabola
C. inclined curve
D. declined curve
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