268771 A drop of mass\(1.00 \mathrm{~g}\) falling from a height \(1.00 \mathrm{~km}\). It hits the ground with a speed of \(50.0 \mathrm{~ms}^{-1}\). What is the work done by the unknown resistive force?

268772 A block of mass\(5 \mathbf{~ k g}\) is initially at rest on a rough horizontal surface. A force of \(45 \mathrm{~N}\) acts on it in a horizontal direction and pushes it over a distance of \(\mathbf{2} \mathbf{~ m}\). The force of friction acting on the block is \(25 \mathrm{~N}\). The final kinetic energy of the block is

268840 A bullet of ass ' \(m\) ' is fired \(w\)ith a vebcity' \(v\) ' into a fixed log of wood and penetrates a distance ' \(s\) ' before coming to rest. Assuming that the path of the bullet in the log of wood is horizontal, the average resistance offered by the \(\log\) of wood is

268841 A ball of mass ' \(m\) ' is thrown in air with speed \(v_{1}\) from a height \(h_{1}\) and it is caught at a height \(h_{2}\lt h_{1}\) when its speed becomes \(v_{2}\). Find the work done on the ball by air resistance.

268771 A drop of mass\(1.00 \mathrm{~g}\) falling from a height \(1.00 \mathrm{~km}\). It hits the ground with a speed of \(50.0 \mathrm{~ms}^{-1}\). What is the work done by the unknown resistive force?

268772 A block of mass\(5 \mathbf{~ k g}\) is initially at rest on a rough horizontal surface. A force of \(45 \mathrm{~N}\) acts on it in a horizontal direction and pushes it over a distance of \(\mathbf{2} \mathbf{~ m}\). The force of friction acting on the block is \(25 \mathrm{~N}\). The final kinetic energy of the block is

268840 A bullet of ass ' \(m\) ' is fired \(w\)ith a vebcity' \(v\) ' into a fixed log of wood and penetrates a distance ' \(s\) ' before coming to rest. Assuming that the path of the bullet in the log of wood is horizontal, the average resistance offered by the \(\log\) of wood is

268841 A ball of mass ' \(m\) ' is thrown in air with speed \(v_{1}\) from a height \(h_{1}\) and it is caught at a height \(h_{2}\lt h_{1}\) when its speed becomes \(v_{2}\). Find the work done on the ball by air resistance.

268771 A drop of mass\(1.00 \mathrm{~g}\) falling from a height \(1.00 \mathrm{~km}\). It hits the ground with a speed of \(50.0 \mathrm{~ms}^{-1}\). What is the work done by the unknown resistive force?

268772 A block of mass\(5 \mathbf{~ k g}\) is initially at rest on a rough horizontal surface. A force of \(45 \mathrm{~N}\) acts on it in a horizontal direction and pushes it over a distance of \(\mathbf{2} \mathbf{~ m}\). The force of friction acting on the block is \(25 \mathrm{~N}\). The final kinetic energy of the block is

268840 A bullet of ass ' \(m\) ' is fired \(w\)ith a vebcity' \(v\) ' into a fixed log of wood and penetrates a distance ' \(s\) ' before coming to rest. Assuming that the path of the bullet in the log of wood is horizontal, the average resistance offered by the \(\log\) of wood is

268841 A ball of mass ' \(m\) ' is thrown in air with speed \(v_{1}\) from a height \(h_{1}\) and it is caught at a height \(h_{2}\lt h_{1}\) when its speed becomes \(v_{2}\). Find the work done on the ball by air resistance.

268771 A drop of mass\(1.00 \mathrm{~g}\) falling from a height \(1.00 \mathrm{~km}\). It hits the ground with a speed of \(50.0 \mathrm{~ms}^{-1}\). What is the work done by the unknown resistive force?

268772 A block of mass\(5 \mathbf{~ k g}\) is initially at rest on a rough horizontal surface. A force of \(45 \mathrm{~N}\) acts on it in a horizontal direction and pushes it over a distance of \(\mathbf{2} \mathbf{~ m}\). The force of friction acting on the block is \(25 \mathrm{~N}\). The final kinetic energy of the block is

268840 A bullet of ass ' \(m\) ' is fired \(w\)ith a vebcity' \(v\) ' into a fixed log of wood and penetrates a distance ' \(s\) ' before coming to rest. Assuming that the path of the bullet in the log of wood is horizontal, the average resistance offered by the \(\log\) of wood is

268841 A ball of mass ' \(m\) ' is thrown in air with speed \(v_{1}\) from a height \(h_{1}\) and it is caught at a height \(h_{2}\lt h_{1}\) when its speed becomes \(v_{2}\). Find the work done on the ball by air resistance.