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.Management Sciences
Category: Motion and Force
Motorcycle safety helmet extends the time of collision hence decreasing the________________?
A. chance of collision
B. force acting
C. velocity
D. impulse
During long jump, athlete runs before taking the jump. By doing so he__________________?
A. provide him a larger inertia
B. decreases his inertia
C. decreases his momentum
D. increases his momentum
The collision between two bodies be elastic if bodies are_________________?
A. solid and soft
B. soft and elastic
C. solid and hard
D. hard and elastic
When body is in motion, ____________ always changes?
A. its velocity
B. its acceleration
C. its position vector
D. its momentum
The trajectory (or path) of a projectile is_________________?
A. straight line
B. parabola
C. hyperbola
D. circle
A body is moving with uniform velocity. Its______________________?
A. speed changes
B. acceleration changes
C. direction of motion changes
D. displacement from origin changes
What is the angle of projection for which the range and maximum height become equal ?
A. tan-1 ¼
B. tan-1 4
C. tan-1 ½
D. tan-1 2
1st law of motion gives the definition of _________________________?
A. rest
B. motion
C. velocity
D. force
Which of the following pair has same direction always ?
A. force, displacement
B. force, velocity
C. force, acceleration
D. force, momentum
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.
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