270234 A horizontal jet of water coming out of a pipe of area of cross-section\(20 \mathrm{~cm}^{2}\) hits a vertical wall with a velocity of \(10 \mathrm{~ms}^{-1}\) and rebounds with the same speed. The force exerted by water on the wall is,

270235 A rocket of mass\(40 \mathrm{~kg}\) has \(160 \mathrm{~kg}\) fuel.The exhaust velocity of the fuel is \(2 \mathrm{kms}^{-1}\). The rate of consumption of fuel is \(4 \mathrm{kgs}^{-1}\). Calculate the ultimate vertical speed gained by the rocket.

270236 A body of mass\(5 \mathrm{~kg}\) starts from the origin with an initial velocity \(\vec{u}=30 \hat{i}+40 \hat{j} \mathrm{~ms}^{-1}\). If a constant force \(\vec{F}=-(\hat{i}+5 \hat{j}) N\) acts on the body, the time in which the \(y\)-component of the velocity becomes zero is

270237 A professional diver of mass\(60 \mathrm{~kg}\) performs a dive from a platform \(10 \mathrm{~m}\) above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is \(1 \mathrm{~s}\) on collision with water surface.Assume that the velocity of the diver just after entering the water surface is \(\mathbf{4} \mathrm{ms}^{-1} \cdot\left(\mathbf{g}=\mathbf{1 0} \mathrm{ms}^{-2}\right)\)

270238 An open knife edge of mass\(200 \mathrm{~g}\) is dropped from height \(5 \mathrm{~m}\) on a cardboard. If the knife edge penetrates distance \(2 \mathrm{~m}\) into the card board, the average resistance offered by the cardboard to the knife edge is \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

270234 A horizontal jet of water coming out of a pipe of area of cross-section\(20 \mathrm{~cm}^{2}\) hits a vertical wall with a velocity of \(10 \mathrm{~ms}^{-1}\) and rebounds with the same speed. The force exerted by water on the wall is,

270235 A rocket of mass\(40 \mathrm{~kg}\) has \(160 \mathrm{~kg}\) fuel.The exhaust velocity of the fuel is \(2 \mathrm{kms}^{-1}\). The rate of consumption of fuel is \(4 \mathrm{kgs}^{-1}\). Calculate the ultimate vertical speed gained by the rocket.

270236 A body of mass\(5 \mathrm{~kg}\) starts from the origin with an initial velocity \(\vec{u}=30 \hat{i}+40 \hat{j} \mathrm{~ms}^{-1}\). If a constant force \(\vec{F}=-(\hat{i}+5 \hat{j}) N\) acts on the body, the time in which the \(y\)-component of the velocity becomes zero is

270237 A professional diver of mass\(60 \mathrm{~kg}\) performs a dive from a platform \(10 \mathrm{~m}\) above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is \(1 \mathrm{~s}\) on collision with water surface.Assume that the velocity of the diver just after entering the water surface is \(\mathbf{4} \mathrm{ms}^{-1} \cdot\left(\mathbf{g}=\mathbf{1 0} \mathrm{ms}^{-2}\right)\)

270238 An open knife edge of mass\(200 \mathrm{~g}\) is dropped from height \(5 \mathrm{~m}\) on a cardboard. If the knife edge penetrates distance \(2 \mathrm{~m}\) into the card board, the average resistance offered by the cardboard to the knife edge is \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

270234 A horizontal jet of water coming out of a pipe of area of cross-section\(20 \mathrm{~cm}^{2}\) hits a vertical wall with a velocity of \(10 \mathrm{~ms}^{-1}\) and rebounds with the same speed. The force exerted by water on the wall is,

270235 A rocket of mass\(40 \mathrm{~kg}\) has \(160 \mathrm{~kg}\) fuel.The exhaust velocity of the fuel is \(2 \mathrm{kms}^{-1}\). The rate of consumption of fuel is \(4 \mathrm{kgs}^{-1}\). Calculate the ultimate vertical speed gained by the rocket.

270236 A body of mass\(5 \mathrm{~kg}\) starts from the origin with an initial velocity \(\vec{u}=30 \hat{i}+40 \hat{j} \mathrm{~ms}^{-1}\). If a constant force \(\vec{F}=-(\hat{i}+5 \hat{j}) N\) acts on the body, the time in which the \(y\)-component of the velocity becomes zero is

270237 A professional diver of mass\(60 \mathrm{~kg}\) performs a dive from a platform \(10 \mathrm{~m}\) above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is \(1 \mathrm{~s}\) on collision with water surface.Assume that the velocity of the diver just after entering the water surface is \(\mathbf{4} \mathrm{ms}^{-1} \cdot\left(\mathbf{g}=\mathbf{1 0} \mathrm{ms}^{-2}\right)\)

270238 An open knife edge of mass\(200 \mathrm{~g}\) is dropped from height \(5 \mathrm{~m}\) on a cardboard. If the knife edge penetrates distance \(2 \mathrm{~m}\) into the card board, the average resistance offered by the cardboard to the knife edge is \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

270234 A horizontal jet of water coming out of a pipe of area of cross-section\(20 \mathrm{~cm}^{2}\) hits a vertical wall with a velocity of \(10 \mathrm{~ms}^{-1}\) and rebounds with the same speed. The force exerted by water on the wall is,

270235 A rocket of mass\(40 \mathrm{~kg}\) has \(160 \mathrm{~kg}\) fuel.The exhaust velocity of the fuel is \(2 \mathrm{kms}^{-1}\). The rate of consumption of fuel is \(4 \mathrm{kgs}^{-1}\). Calculate the ultimate vertical speed gained by the rocket.

270236 A body of mass\(5 \mathrm{~kg}\) starts from the origin with an initial velocity \(\vec{u}=30 \hat{i}+40 \hat{j} \mathrm{~ms}^{-1}\). If a constant force \(\vec{F}=-(\hat{i}+5 \hat{j}) N\) acts on the body, the time in which the \(y\)-component of the velocity becomes zero is

270237 A professional diver of mass\(60 \mathrm{~kg}\) performs a dive from a platform \(10 \mathrm{~m}\) above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is \(1 \mathrm{~s}\) on collision with water surface.Assume that the velocity of the diver just after entering the water surface is \(\mathbf{4} \mathrm{ms}^{-1} \cdot\left(\mathbf{g}=\mathbf{1 0} \mathrm{ms}^{-2}\right)\)

270238 An open knife edge of mass\(200 \mathrm{~g}\) is dropped from height \(5 \mathrm{~m}\) on a cardboard. If the knife edge penetrates distance \(2 \mathrm{~m}\) into the card board, the average resistance offered by the cardboard to the knife edge is \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)

270234 A horizontal jet of water coming out of a pipe of area of cross-section\(20 \mathrm{~cm}^{2}\) hits a vertical wall with a velocity of \(10 \mathrm{~ms}^{-1}\) and rebounds with the same speed. The force exerted by water on the wall is,

270235 A rocket of mass\(40 \mathrm{~kg}\) has \(160 \mathrm{~kg}\) fuel.The exhaust velocity of the fuel is \(2 \mathrm{kms}^{-1}\). The rate of consumption of fuel is \(4 \mathrm{kgs}^{-1}\). Calculate the ultimate vertical speed gained by the rocket.

270236 A body of mass\(5 \mathrm{~kg}\) starts from the origin with an initial velocity \(\vec{u}=30 \hat{i}+40 \hat{j} \mathrm{~ms}^{-1}\). If a constant force \(\vec{F}=-(\hat{i}+5 \hat{j}) N\) acts on the body, the time in which the \(y\)-component of the velocity becomes zero is

270237 A professional diver of mass\(60 \mathrm{~kg}\) performs a dive from a platform \(10 \mathrm{~m}\) above the water surface. Find the magnitude of the average impact force experienced by him if the impact time is \(1 \mathrm{~s}\) on collision with water surface.Assume that the velocity of the diver just after entering the water surface is \(\mathbf{4} \mathrm{ms}^{-1} \cdot\left(\mathbf{g}=\mathbf{1 0} \mathrm{ms}^{-2}\right)\)

270238 An open knife edge of mass\(200 \mathrm{~g}\) is dropped from height \(5 \mathrm{~m}\) on a cardboard. If the knife edge penetrates distance \(2 \mathrm{~m}\) into the card board, the average resistance offered by the cardboard to the knife edge is \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right)\)