04. Motion Under Gravity
Motion in One Dimensions

141903 A ball is thrown vertically upward. It has a speed of \(10 \mathrm{~m} / \mathrm{s}\) when it has reached one-half of its maximum height. How high does the ball rise? (Take, \(g=10 \mathrm{~m} / \mathrm{s}^{2}\) )

1 \(15 \mathrm{~m}\)
2 \(10 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(5 \mathrm{~m}\)
Motion in One Dimensions

141904 A stone is dropped from a balloon going up with uniform velocity of \(5.0 \mathrm{~m} / \mathrm{s}\). If the balloon was \(50 \mathrm{~m}\) high when the stone was dropped, then its height when the stone hits the ground is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(18.5 \mathrm{~m}\)
2 \(60.0 \mathrm{~m}\)
3 \(68.5 \mathrm{~m}\)
4 \(55.0 \mathrm{~m}\)
Motion in One Dimensions

141905 On dropping a stone onto a well of depth \(80 \mathrm{~m}\), the splash is heard after 4.25 seconds. Then the velocity of sound in air is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(300 \mathrm{~m} / \mathrm{s}\)
2 \(320 \mathrm{~m} / \mathrm{s}\)
3 \(340 \mathrm{~m} / \mathrm{s}\)
4 None of the above
Motion in One Dimensions

141906 \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) are points in a vertical line that \(\mathrm{AB}=\) \(B C\) If a body falls freely from rest at \(A\), And \(t_{1}\) and \(\mathbf{t}_{\mathbf{2}}\) are times taken to travel distances \(A B\) and \(B C\), then ratio \(\left(t_{2} / t_{1}\right)\) is

1 \(\sqrt{2}+1\)
2 \(\sqrt{2}-1\)
3 \(2 \sqrt{2}\)
4 \(\frac{1}{\sqrt{2}+1}\)
Motion in One Dimensions

141908 A bullet is fired vertically up from a \(400 \mathrm{~m}\) tall tower with a speed \(80 \mathrm{~m} / \mathrm{s}\). If \(g\) is taken as 10 \(\mathrm{m} / \mathrm{s}^{2}\), the time taken by the bullet to reach the ground will be

1 \(8 \mathrm{~s}\)
2 \(16 \mathrm{~s}\)
3 \(20 \mathrm{~s}\)
4 \(24 \mathrm{~s}\)
Motion in One Dimensions

141903 A ball is thrown vertically upward. It has a speed of \(10 \mathrm{~m} / \mathrm{s}\) when it has reached one-half of its maximum height. How high does the ball rise? (Take, \(g=10 \mathrm{~m} / \mathrm{s}^{2}\) )

1 \(15 \mathrm{~m}\)
2 \(10 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(5 \mathrm{~m}\)
Motion in One Dimensions

141904 A stone is dropped from a balloon going up with uniform velocity of \(5.0 \mathrm{~m} / \mathrm{s}\). If the balloon was \(50 \mathrm{~m}\) high when the stone was dropped, then its height when the stone hits the ground is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(18.5 \mathrm{~m}\)
2 \(60.0 \mathrm{~m}\)
3 \(68.5 \mathrm{~m}\)
4 \(55.0 \mathrm{~m}\)
Motion in One Dimensions

141905 On dropping a stone onto a well of depth \(80 \mathrm{~m}\), the splash is heard after 4.25 seconds. Then the velocity of sound in air is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(300 \mathrm{~m} / \mathrm{s}\)
2 \(320 \mathrm{~m} / \mathrm{s}\)
3 \(340 \mathrm{~m} / \mathrm{s}\)
4 None of the above
Motion in One Dimensions

141906 \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) are points in a vertical line that \(\mathrm{AB}=\) \(B C\) If a body falls freely from rest at \(A\), And \(t_{1}\) and \(\mathbf{t}_{\mathbf{2}}\) are times taken to travel distances \(A B\) and \(B C\), then ratio \(\left(t_{2} / t_{1}\right)\) is

1 \(\sqrt{2}+1\)
2 \(\sqrt{2}-1\)
3 \(2 \sqrt{2}\)
4 \(\frac{1}{\sqrt{2}+1}\)
Motion in One Dimensions

141908 A bullet is fired vertically up from a \(400 \mathrm{~m}\) tall tower with a speed \(80 \mathrm{~m} / \mathrm{s}\). If \(g\) is taken as 10 \(\mathrm{m} / \mathrm{s}^{2}\), the time taken by the bullet to reach the ground will be

1 \(8 \mathrm{~s}\)
2 \(16 \mathrm{~s}\)
3 \(20 \mathrm{~s}\)
4 \(24 \mathrm{~s}\)
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Motion in One Dimensions

141903 A ball is thrown vertically upward. It has a speed of \(10 \mathrm{~m} / \mathrm{s}\) when it has reached one-half of its maximum height. How high does the ball rise? (Take, \(g=10 \mathrm{~m} / \mathrm{s}^{2}\) )

1 \(15 \mathrm{~m}\)
2 \(10 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(5 \mathrm{~m}\)
Motion in One Dimensions

141904 A stone is dropped from a balloon going up with uniform velocity of \(5.0 \mathrm{~m} / \mathrm{s}\). If the balloon was \(50 \mathrm{~m}\) high when the stone was dropped, then its height when the stone hits the ground is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(18.5 \mathrm{~m}\)
2 \(60.0 \mathrm{~m}\)
3 \(68.5 \mathrm{~m}\)
4 \(55.0 \mathrm{~m}\)
Motion in One Dimensions

141905 On dropping a stone onto a well of depth \(80 \mathrm{~m}\), the splash is heard after 4.25 seconds. Then the velocity of sound in air is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(300 \mathrm{~m} / \mathrm{s}\)
2 \(320 \mathrm{~m} / \mathrm{s}\)
3 \(340 \mathrm{~m} / \mathrm{s}\)
4 None of the above
Motion in One Dimensions

141906 \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) are points in a vertical line that \(\mathrm{AB}=\) \(B C\) If a body falls freely from rest at \(A\), And \(t_{1}\) and \(\mathbf{t}_{\mathbf{2}}\) are times taken to travel distances \(A B\) and \(B C\), then ratio \(\left(t_{2} / t_{1}\right)\) is

1 \(\sqrt{2}+1\)
2 \(\sqrt{2}-1\)
3 \(2 \sqrt{2}\)
4 \(\frac{1}{\sqrt{2}+1}\)
Motion in One Dimensions

141908 A bullet is fired vertically up from a \(400 \mathrm{~m}\) tall tower with a speed \(80 \mathrm{~m} / \mathrm{s}\). If \(g\) is taken as 10 \(\mathrm{m} / \mathrm{s}^{2}\), the time taken by the bullet to reach the ground will be

1 \(8 \mathrm{~s}\)
2 \(16 \mathrm{~s}\)
3 \(20 \mathrm{~s}\)
4 \(24 \mathrm{~s}\)
Motion in One Dimensions

141903 A ball is thrown vertically upward. It has a speed of \(10 \mathrm{~m} / \mathrm{s}\) when it has reached one-half of its maximum height. How high does the ball rise? (Take, \(g=10 \mathrm{~m} / \mathrm{s}^{2}\) )

1 \(15 \mathrm{~m}\)
2 \(10 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(5 \mathrm{~m}\)
Motion in One Dimensions

141904 A stone is dropped from a balloon going up with uniform velocity of \(5.0 \mathrm{~m} / \mathrm{s}\). If the balloon was \(50 \mathrm{~m}\) high when the stone was dropped, then its height when the stone hits the ground is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(18.5 \mathrm{~m}\)
2 \(60.0 \mathrm{~m}\)
3 \(68.5 \mathrm{~m}\)
4 \(55.0 \mathrm{~m}\)
Motion in One Dimensions

141905 On dropping a stone onto a well of depth \(80 \mathrm{~m}\), the splash is heard after 4.25 seconds. Then the velocity of sound in air is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(300 \mathrm{~m} / \mathrm{s}\)
2 \(320 \mathrm{~m} / \mathrm{s}\)
3 \(340 \mathrm{~m} / \mathrm{s}\)
4 None of the above
Motion in One Dimensions

141906 \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) are points in a vertical line that \(\mathrm{AB}=\) \(B C\) If a body falls freely from rest at \(A\), And \(t_{1}\) and \(\mathbf{t}_{\mathbf{2}}\) are times taken to travel distances \(A B\) and \(B C\), then ratio \(\left(t_{2} / t_{1}\right)\) is

1 \(\sqrt{2}+1\)
2 \(\sqrt{2}-1\)
3 \(2 \sqrt{2}\)
4 \(\frac{1}{\sqrt{2}+1}\)
Motion in One Dimensions

141908 A bullet is fired vertically up from a \(400 \mathrm{~m}\) tall tower with a speed \(80 \mathrm{~m} / \mathrm{s}\). If \(g\) is taken as 10 \(\mathrm{m} / \mathrm{s}^{2}\), the time taken by the bullet to reach the ground will be

1 \(8 \mathrm{~s}\)
2 \(16 \mathrm{~s}\)
3 \(20 \mathrm{~s}\)
4 \(24 \mathrm{~s}\)
Motion in One Dimensions

141903 A ball is thrown vertically upward. It has a speed of \(10 \mathrm{~m} / \mathrm{s}\) when it has reached one-half of its maximum height. How high does the ball rise? (Take, \(g=10 \mathrm{~m} / \mathrm{s}^{2}\) )

1 \(15 \mathrm{~m}\)
2 \(10 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(5 \mathrm{~m}\)
Motion in One Dimensions

141904 A stone is dropped from a balloon going up with uniform velocity of \(5.0 \mathrm{~m} / \mathrm{s}\). If the balloon was \(50 \mathrm{~m}\) high when the stone was dropped, then its height when the stone hits the ground is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(18.5 \mathrm{~m}\)
2 \(60.0 \mathrm{~m}\)
3 \(68.5 \mathrm{~m}\)
4 \(55.0 \mathrm{~m}\)
Motion in One Dimensions

141905 On dropping a stone onto a well of depth \(80 \mathrm{~m}\), the splash is heard after 4.25 seconds. Then the velocity of sound in air is \(\left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

1 \(300 \mathrm{~m} / \mathrm{s}\)
2 \(320 \mathrm{~m} / \mathrm{s}\)
3 \(340 \mathrm{~m} / \mathrm{s}\)
4 None of the above
Motion in One Dimensions

141906 \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) are points in a vertical line that \(\mathrm{AB}=\) \(B C\) If a body falls freely from rest at \(A\), And \(t_{1}\) and \(\mathbf{t}_{\mathbf{2}}\) are times taken to travel distances \(A B\) and \(B C\), then ratio \(\left(t_{2} / t_{1}\right)\) is

1 \(\sqrt{2}+1\)
2 \(\sqrt{2}-1\)
3 \(2 \sqrt{2}\)
4 \(\frac{1}{\sqrt{2}+1}\)
Motion in One Dimensions

141908 A bullet is fired vertically up from a \(400 \mathrm{~m}\) tall tower with a speed \(80 \mathrm{~m} / \mathrm{s}\). If \(g\) is taken as 10 \(\mathrm{m} / \mathrm{s}^{2}\), the time taken by the bullet to reach the ground will be

1 \(8 \mathrm{~s}\)
2 \(16 \mathrm{~s}\)
3 \(20 \mathrm{~s}\)
4 \(24 \mathrm{~s}\)