269735
The distance moved by a freely falling body (starting from rest) during the\(15 t\), 2nd and 3rd ... nth second of its motion, are proportional to
269736
A ball released from a height '\(n\) ' touches the ground in ' \(t\) 's. After \(t / 25\) sincedropping, the height of thebody from the ground
1 \(\frac{h}{2}\)
2 \(\frac{\mathrm{h}}{4}\)
3 \(\frac{3 h}{4}\)
4 \(\frac{3 h}{2}\)
Explanation:
\(h=\frac{1}{2} g t^{2}\)
MOTION IN A STRIGHT LINE
269737
A boy standing at the top of a tower of\(20 \mathrm{~m}\) height drops a stone A ssuming \(\mathrm{g}=10 \mathrm{~ms}^{-2}\), thevelocity with which it hits the ground is
1 \(20 \mathrm{~ms}^{-1}\)
2 \(40 \mathrm{~ms}^{-1}\)
3 \(5 \mathrm{~ms}^{-1}\)
4 \(10 \mathrm{~ms}^{-1}\)
Explanation:
\(v=\sqrt{2 g h}\)
AIPMT 2011
MOTION IN A STRIGHT LINE
269738
A ball thrown vertically upwards with an initial velocity of\(1.4 \mathrm{~m} / \mathrm{s}\) returns in \(2 \mathrm{~s}\). The to-
tal displacement of the ball is
1 \(22.4 \mathrm{~cm}\)
2 zero
3 \(44.8 \mathrm{~m}\)
4 \(33.6 \mathrm{~m}\)
Explanation:
Sincetheball retums back to itsinitial position, thedisplacementiszero.
269735
The distance moved by a freely falling body (starting from rest) during the\(15 t\), 2nd and 3rd ... nth second of its motion, are proportional to
269736
A ball released from a height '\(n\) ' touches the ground in ' \(t\) 's. After \(t / 25\) sincedropping, the height of thebody from the ground
1 \(\frac{h}{2}\)
2 \(\frac{\mathrm{h}}{4}\)
3 \(\frac{3 h}{4}\)
4 \(\frac{3 h}{2}\)
Explanation:
\(h=\frac{1}{2} g t^{2}\)
MOTION IN A STRIGHT LINE
269737
A boy standing at the top of a tower of\(20 \mathrm{~m}\) height drops a stone A ssuming \(\mathrm{g}=10 \mathrm{~ms}^{-2}\), thevelocity with which it hits the ground is
1 \(20 \mathrm{~ms}^{-1}\)
2 \(40 \mathrm{~ms}^{-1}\)
3 \(5 \mathrm{~ms}^{-1}\)
4 \(10 \mathrm{~ms}^{-1}\)
Explanation:
\(v=\sqrt{2 g h}\)
AIPMT 2011
MOTION IN A STRIGHT LINE
269738
A ball thrown vertically upwards with an initial velocity of\(1.4 \mathrm{~m} / \mathrm{s}\) returns in \(2 \mathrm{~s}\). The to-
tal displacement of the ball is
1 \(22.4 \mathrm{~cm}\)
2 zero
3 \(44.8 \mathrm{~m}\)
4 \(33.6 \mathrm{~m}\)
Explanation:
Sincetheball retums back to itsinitial position, thedisplacementiszero.
269735
The distance moved by a freely falling body (starting from rest) during the\(15 t\), 2nd and 3rd ... nth second of its motion, are proportional to
269736
A ball released from a height '\(n\) ' touches the ground in ' \(t\) 's. After \(t / 25\) sincedropping, the height of thebody from the ground
1 \(\frac{h}{2}\)
2 \(\frac{\mathrm{h}}{4}\)
3 \(\frac{3 h}{4}\)
4 \(\frac{3 h}{2}\)
Explanation:
\(h=\frac{1}{2} g t^{2}\)
MOTION IN A STRIGHT LINE
269737
A boy standing at the top of a tower of\(20 \mathrm{~m}\) height drops a stone A ssuming \(\mathrm{g}=10 \mathrm{~ms}^{-2}\), thevelocity with which it hits the ground is
1 \(20 \mathrm{~ms}^{-1}\)
2 \(40 \mathrm{~ms}^{-1}\)
3 \(5 \mathrm{~ms}^{-1}\)
4 \(10 \mathrm{~ms}^{-1}\)
Explanation:
\(v=\sqrt{2 g h}\)
AIPMT 2011
MOTION IN A STRIGHT LINE
269738
A ball thrown vertically upwards with an initial velocity of\(1.4 \mathrm{~m} / \mathrm{s}\) returns in \(2 \mathrm{~s}\). The to-
tal displacement of the ball is
1 \(22.4 \mathrm{~cm}\)
2 zero
3 \(44.8 \mathrm{~m}\)
4 \(33.6 \mathrm{~m}\)
Explanation:
Sincetheball retums back to itsinitial position, thedisplacementiszero.
269735
The distance moved by a freely falling body (starting from rest) during the\(15 t\), 2nd and 3rd ... nth second of its motion, are proportional to
269736
A ball released from a height '\(n\) ' touches the ground in ' \(t\) 's. After \(t / 25\) sincedropping, the height of thebody from the ground
1 \(\frac{h}{2}\)
2 \(\frac{\mathrm{h}}{4}\)
3 \(\frac{3 h}{4}\)
4 \(\frac{3 h}{2}\)
Explanation:
\(h=\frac{1}{2} g t^{2}\)
MOTION IN A STRIGHT LINE
269737
A boy standing at the top of a tower of\(20 \mathrm{~m}\) height drops a stone A ssuming \(\mathrm{g}=10 \mathrm{~ms}^{-2}\), thevelocity with which it hits the ground is
1 \(20 \mathrm{~ms}^{-1}\)
2 \(40 \mathrm{~ms}^{-1}\)
3 \(5 \mathrm{~ms}^{-1}\)
4 \(10 \mathrm{~ms}^{-1}\)
Explanation:
\(v=\sqrt{2 g h}\)
AIPMT 2011
MOTION IN A STRIGHT LINE
269738
A ball thrown vertically upwards with an initial velocity of\(1.4 \mathrm{~m} / \mathrm{s}\) returns in \(2 \mathrm{~s}\). The to-
tal displacement of the ball is
1 \(22.4 \mathrm{~cm}\)
2 zero
3 \(44.8 \mathrm{~m}\)
4 \(33.6 \mathrm{~m}\)
Explanation:
Sincetheball retums back to itsinitial position, thedisplacementiszero.