A body is projected with velocity m/s with an angle of projection 60 with horizontal. Calculate velocity on that point where body makes an angle 30 with the horizontal.
1. 20 m/s
2.
3.
4. 10 m/s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a uniform circular motion, which of the following quantity is not constant
1. Angular momentum
2. Speed
3. Kinetic energy
4. Momentum
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle is moving with veocity ; where k is constant. The general equation for the path is:
1.
2.
3.
4. xy=constant
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle is projected with a velocity u making an angle with the horizontal. At any instant, its velocity v is at right angles to its initial velocity u; then v is:
1. ucos
2. utan
3. ucot
4. usec
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA projectile is given an initial velocity of . The cartesian equation of its path is (g = 10 )
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA ship A is moving westwards with a speed of 10 km and a ship B, 100 km south of A is moving northwards with a speed of 10 km . The time after which the distance between them becomes the shortest, is:
1. 5 hr
2. hr
3. hr
4. 0 hr
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTime taken by the projectile to reach from A to B is t. Then the distance AB is equal to :
1.
2.
3.
4. 2ut
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle projected with kinetic energy with an angle of projection . Then the variation of kinetic K with vertical displacement y is
1. linear
2. parabolic
3. hyperbolic
4. periodic
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA river is flowing with a speed of 1 km/hr. A swimmer wants to go to point 'C' starting from 'A'. He swims with a speed of 5 km/hr, at an angle with respect to the river. If AB=BC=400m. Then-
(1) time taken by the man is 12 min
(2) time taken by the man is 8 min
(3) the value of is 45
(4) the value of is 53
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA body is thrown horizontally with a velocity from the top of a tower of height h. It strikes the level ground through the foot of the tower at a distance x from the tower. The value of x is:
1. h
2.
3. 2h
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology