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() is a unit vector along -axis. If then what value is
The correct answer is:
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Neglecting the air resistance, the time of flight of a projectile is determined by
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What vector must be added to the sum of two vectors and so that the resultant is a unit vector along -axis.
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A car runs 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
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A cyclist riding the bicycle at a speed of takes a turn around a circular road of radius without skidding. Given , what is his inclination to the vertical
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A particle is projected with a velocity such that its range on the horizontal plane is twice the greatest height attained by it. The range of the projectile is (where is acceleration due to gravity)
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A projectile is thrown at angle with vertical. It reaches a maximum height . The time taken to reach the highest point of its path is
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Four concurrent coplanar forces in newton are acting at a point and keep it in equilibrium figure. Then values of and are
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A body of mass kg is suspended by a string from a rigid support. The body is pulled horizontally by a force until the string makes an angle of 30 with the vertical. The value o and tension in the string are
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