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.Management Sciences
Category: Motion and Force
Which of the following is not an example of projectile motion ?
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A. a gas filled ballon
B. bullet fired from gun
C. a football kicked
D. a base ball shot
When velocity time graph is a straight line parallel to time axis then__________________?
A. acceleration is const
B. acceleration is variable
C. acceleration is zero
D. velocity is zero
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 their speeds are________________?
A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s
Time rate of change of momentum is equal to____________________?
A. force
B. impulse
C. velocity
D. both A and C
Area under velocity time graph represent_____________________?
A. force
B. displacement
C. distance
D. acceleration
Distance covered by a freely falling body in 2 seconds will be__________________?
A. 4.9 m
B. 19.6 m
C. 39.2 m
D. 44.1 m
When a body moves in a straight line then its displacement coincides with__________________?
A. distance
B. force
C. acceleration is zero
D. both A and B
Which shows the correct relation between time of flight T and maximum height H ?
A. H=gT2/8
B. H=8T2/g
C. H=8g/T2
D. H=gT2
3rd law of motion explains______________________?
A. effect of force
B. existence of a force
C. existence of two forces
D. existence of pair of forces in nature
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