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#18-Maximum-Height
(Physics) > Motion in A Plane
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Related Practice Questions :

A body is projected with velocity $20\sqrt{3}$ 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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Difficulty Level:

A body thrown vertically so as to reach its maximum height in t second. The toal time from the time of projection to reach a point at half of its maximum height while returning (in second) is:

(1) $\sqrt{2}t$

(2) $\left(1+\frac{1}{\sqrt{2}}\right)t$

(3) $\frac{3t}{2}$

(4) $\frac{t}{\sqrt{2}}$

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Difficulty Level:

A projectile is given an initial velocity of $\stackrel{^}{i}+2\stackrel{^}{j}$. The cartesian equation of its path is (g = 10 ${\mathrm{ms}}^{-2}$

1. $\mathrm{y}=2\mathrm{x}-5{\mathrm{x}}^{2}$

2. $\mathrm{y}=\mathrm{x}-5{\mathrm{x}}^{2}$

3. $4\mathrm{y}=2\mathrm{x}-5{\mathrm{x}}^{2}$

4. $\mathrm{y}=2\mathrm{x}-25{\mathrm{x}}^{2}$

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A body is thrown horizontally with a velocity $\sqrt{2gh}$ 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) $\frac{h}{2}$

(3) 2h

(4) $\frac{2h}{3}$

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The gravity in space is given by . Two particles are simultaneously projected with velocity  and . Then, the ratio of their times of flight

1. 1:1

2. 1:2

3. 2:1

4. none