A body is moving with a velocity of 30 m/s towards the east. After 10 sec, its velocity becomes 40 m/s towards the north. The average acceleration of the body is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA missile is fired for a maximum range with an initial velocity of 20 m/s. If g= 10 m/s2, then the range of the missile will be
1. 50 m
2. 60 m
3. 20 m
4. 40 m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle has initial velocity and has acceleration . Its speed after 10 s is
1. 7 units
2. 7units
3. 8.5 units
4. 10 units
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle of mass m is projected with velocity v making an angle of 45° with the horizontal. When the particle lands on the level ground, the magnitude of change in its momentum will be:
1.
2.
3.
4. zero
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are (, 3). The path of the particle makes an angle of .......................with the x-axis :
1. 30o
2. 45o
3. 60o
4. 0o
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor a projectile projected at angles (45°-θ) and (45°+θ), the horizontal ranges described by the projectile are in the ratio of:
1. 1:1
2. 2:3
3. 1:2
4. 2:1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA car turns at a constant speed on a circular track of radius 100 m, taking 62.8 s for every circular lap. The average velocity and average speed for each circular lap, respectively, is :
1. 0,0
2. 0, 10 m/s
3. 10 m/s, 10 m/s
4. 10 m/s, 0
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle moves in a circle of radius 5 cm with constant speed and time period sec. The acceleration of the particle is:
1. 25 m/s2
2. 36 m/s2
3. 5 m/s2
4. 15 m/s2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe horizontal range and the maximum height of a projectile are equal. The angle of projection of the projectile is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe velocity of a projectile at the initial point A is m/s. Its velocity (in m/s) at point B is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology