270141 A machine gun fires a bullet of mass \(40 \mathrm{~g}\) with a velocity \(1200 \mathrm{~ms}^{-1}\). The man holding it can exert a maximum force of \(144 \mathrm{~N}\) on the gun. How many bullets can he fire per second at the most?

270142 A truck of mass \(500 \mathrm{~kg}\) is moving with constant speed \(10 \mathrm{~ms}^{-1}\).If sand is dropped into the truck at the constant rate \(10 \mathrm{~kg} / \mathrm{min}\), the force required to maintain the motion with constant velocity is

270143 A \(5000 \mathrm{~kg}\) rocket is set for vertical firing. The exhaust speed is \(800 \mathrm{~ms}^{-1}\). To give an upward acceleration of \(20 \mathrm{~ms}^{-2}\), the amount of gas ejected per second to supply the needed thrust is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

270184 A horizontal force "F" produces an acceleration of\(6 \mathrm{~m} / \mathrm{s}^{2}\) on a block resting on a smooth horizontal surface. The same force produces an acceleration of \(3 \mathrm{~m} / \mathrm{s}^{2}\) on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be

270141 A machine gun fires a bullet of mass \(40 \mathrm{~g}\) with a velocity \(1200 \mathrm{~ms}^{-1}\). The man holding it can exert a maximum force of \(144 \mathrm{~N}\) on the gun. How many bullets can he fire per second at the most?

270142 A truck of mass \(500 \mathrm{~kg}\) is moving with constant speed \(10 \mathrm{~ms}^{-1}\).If sand is dropped into the truck at the constant rate \(10 \mathrm{~kg} / \mathrm{min}\), the force required to maintain the motion with constant velocity is

270143 A \(5000 \mathrm{~kg}\) rocket is set for vertical firing. The exhaust speed is \(800 \mathrm{~ms}^{-1}\). To give an upward acceleration of \(20 \mathrm{~ms}^{-2}\), the amount of gas ejected per second to supply the needed thrust is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

270184 A horizontal force "F" produces an acceleration of\(6 \mathrm{~m} / \mathrm{s}^{2}\) on a block resting on a smooth horizontal surface. The same force produces an acceleration of \(3 \mathrm{~m} / \mathrm{s}^{2}\) on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be

270141 A machine gun fires a bullet of mass \(40 \mathrm{~g}\) with a velocity \(1200 \mathrm{~ms}^{-1}\). The man holding it can exert a maximum force of \(144 \mathrm{~N}\) on the gun. How many bullets can he fire per second at the most?

270142 A truck of mass \(500 \mathrm{~kg}\) is moving with constant speed \(10 \mathrm{~ms}^{-1}\).If sand is dropped into the truck at the constant rate \(10 \mathrm{~kg} / \mathrm{min}\), the force required to maintain the motion with constant velocity is

270143 A \(5000 \mathrm{~kg}\) rocket is set for vertical firing. The exhaust speed is \(800 \mathrm{~ms}^{-1}\). To give an upward acceleration of \(20 \mathrm{~ms}^{-2}\), the amount of gas ejected per second to supply the needed thrust is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

270184 A horizontal force "F" produces an acceleration of\(6 \mathrm{~m} / \mathrm{s}^{2}\) on a block resting on a smooth horizontal surface. The same force produces an acceleration of \(3 \mathrm{~m} / \mathrm{s}^{2}\) on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be

270141 A machine gun fires a bullet of mass \(40 \mathrm{~g}\) with a velocity \(1200 \mathrm{~ms}^{-1}\). The man holding it can exert a maximum force of \(144 \mathrm{~N}\) on the gun. How many bullets can he fire per second at the most?

270142 A truck of mass \(500 \mathrm{~kg}\) is moving with constant speed \(10 \mathrm{~ms}^{-1}\).If sand is dropped into the truck at the constant rate \(10 \mathrm{~kg} / \mathrm{min}\), the force required to maintain the motion with constant velocity is

270143 A \(5000 \mathrm{~kg}\) rocket is set for vertical firing. The exhaust speed is \(800 \mathrm{~ms}^{-1}\). To give an upward acceleration of \(20 \mathrm{~ms}^{-2}\), the amount of gas ejected per second to supply the needed thrust is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

270184 A horizontal force "F" produces an acceleration of\(6 \mathrm{~m} / \mathrm{s}^{2}\) on a block resting on a smooth horizontal surface. The same force produces an acceleration of \(3 \mathrm{~m} / \mathrm{s}^{2}\) on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be