A boy standing at the top of a tower of $$20$$ m height drops a stone. Assuming $$g=10$$ m/s2, the velocity with which it hits the ground will be:
1. $$20$$ m/s
2. $$40$$ m/s
3. $$5$$ m/s
4. $$10$$ m/s

Subtopic:  Uniformly Accelerated Motion |
90%
From NCERT
NEET - 2011
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If a body is thrown up with the velocity of 15 m/s, then the maximum height attained by the body is: (assume g = 10 m/s2

1. 11.25 m

2. 16.2 m

3. 24.5 m

4. 7.62 m

Subtopic:  Uniformly Accelerated Motion |
89%
From NCERT
PMT - 2003
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A body starts to fall freely under gravity. The distances covered by it in the first, second and third second will be in the ratio:
1. $$1:3:5$$
2. $$1:2:3$$
3. $$1:4:9$$
4. $$1:5:6$$

Subtopic:  Uniformly Accelerated Motion |
86%
From NCERT
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A body is thrown upwards and reaches its maximum height. At that position:

 1 its velocity is zero and its acceleration is also zero. 2 its velocity is zero but its acceleration is maximum. 3 its acceleration is minimum. 4 its velocity is zero and its acceleration is the acceleration due to gravity.
Subtopic:  Uniformly Accelerated Motion |
82%
From NCERT
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A ball is thrown vertically downwards with a velocity of $$20$$ m/s from the top of a tower. It hits the ground after some time with the velocity of $$80$$ m/s . The height of the tower is: (assuming $\mathrm{g}=10$ $\mathrm{m}/{\mathrm{s}}^{2}\right)$

 1 $$340$$ m 2 $$320$$ m 3 $$300$$ m 4 $$360$$ m
Subtopic:  Uniformly Accelerated Motion |
82%
From NCERT
NEET - 2020
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A stone falls freely under gravity. It covers distances $$h_1,~h_2$$ and $$h_3$$ in the first $$5$$ seconds, the next $$5$$ seconds and the next $$5$$ seconds respectively. The relation between $$h_1,~h_2$$ and $$h_3$$ is:

 1 $$h_1=\frac{h_2}{3}=\frac{h_3}{5}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \$$ 2 $$h_2=3h_1$$ and $$h_3=3h_2$$ 3 $$h_1=h_2=h_3$$ 4 $$h_1=2h_2=3h_3$$
Subtopic:  Uniformly Accelerated Motion |
82%
From NCERT
AIPMT - 2013
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A body is thrown vertically up from the ground. It reaches a maximum height of $$100$$ m in $$5$$ s. After what time will it reach the ground from the position of maximum height?
1. $$1.2$$ s
2. $$5$$ s
3. $$10$$ s
4. $$25$$ s

Subtopic:  Uniformly Accelerated Motion |
80%
From NCERT
PMT - 2000
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A car travelling at a speed of 30 km/h is brought to rest at a distance of 8 m by applying brakes. If the same car is moving at a speed of 60 km/h, then it can be brought to rest with the same brakes in:

1. 64 m

2. 32 m

3. 16 m

4. 4 m

Subtopic:  Uniformly Accelerated Motion |
77%
From NCERT
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A body starting from rest moves with uniform acceleration on a horizontal surface. The body covers 3 consecutive equal distances from the beginning in time ${\mathrm{t}}_{1},$  ${\mathrm{t}}_{3}$ seconds. The ratio of ${\mathrm{t}}_{1}:{\mathrm{t}}_{2}:{\mathrm{t}}_{3}$ is:
1. 1: 2 : 3
2. $1:\sqrt{2}:\sqrt{3}$
3. $1:\left(\sqrt{2}-1\right):\left(\sqrt{3}-\sqrt{2}\right)$
4. $\sqrt{3}:\sqrt{2}:1$

Subtopic:  Uniformly Accelerated Motion |
78%
From NCERT
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A particle moves in a straight line with a constant acceleration. It changes its velocity from $$10$$ ms-1 to $$20$$ ms-1 while covering a distance of $$135$$ m in $$t$$ seconds. The value of $$t$$ is:

 1 10 2 1.8 3 12 4 9
Subtopic:  Uniformly Accelerated Motion |
78%
From NCERT
AIPMT - 2008
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