371757 Figure represents the position-time graph of a body of mass \(4 \mathrm{~kg}\). Impulse \(\left(\mathrm{kg} \mathrm{ms}^{-1}\right)\) imparted to the body at \(t=0\) is

371758 If a car accelerates from \(20 \mathrm{~m} / \mathrm{s}\) to \(40 \mathrm{~m} / \mathrm{s}\) in 10 \(s\) and its forward thrust is equal to \(3 \mathrm{kN}\), what is the mass of car?

371759 A machine gun has a mass \(5 \mathrm{~kg}\). It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of \(400 \mathrm{~ms}^{-1}\). What force is required to keep the gun in position?

371760 A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads \(49 \mathrm{~N}\), when the lift is stationary. If the lift moves downward with an acceleration of \(5 \mathrm{~m} / \mathrm{s}^{2}\), the reading of the spring balance will be

371757 Figure represents the position-time graph of a body of mass \(4 \mathrm{~kg}\). Impulse \(\left(\mathrm{kg} \mathrm{ms}^{-1}\right)\) imparted to the body at \(t=0\) is

371758 If a car accelerates from \(20 \mathrm{~m} / \mathrm{s}\) to \(40 \mathrm{~m} / \mathrm{s}\) in 10 \(s\) and its forward thrust is equal to \(3 \mathrm{kN}\), what is the mass of car?

371759 A machine gun has a mass \(5 \mathrm{~kg}\). It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of \(400 \mathrm{~ms}^{-1}\). What force is required to keep the gun in position?

371760 A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads \(49 \mathrm{~N}\), when the lift is stationary. If the lift moves downward with an acceleration of \(5 \mathrm{~m} / \mathrm{s}^{2}\), the reading of the spring balance will be

371757 Figure represents the position-time graph of a body of mass \(4 \mathrm{~kg}\). Impulse \(\left(\mathrm{kg} \mathrm{ms}^{-1}\right)\) imparted to the body at \(t=0\) is

371758 If a car accelerates from \(20 \mathrm{~m} / \mathrm{s}\) to \(40 \mathrm{~m} / \mathrm{s}\) in 10 \(s\) and its forward thrust is equal to \(3 \mathrm{kN}\), what is the mass of car?

371759 A machine gun has a mass \(5 \mathrm{~kg}\). It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of \(400 \mathrm{~ms}^{-1}\). What force is required to keep the gun in position?

371760 A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads \(49 \mathrm{~N}\), when the lift is stationary. If the lift moves downward with an acceleration of \(5 \mathrm{~m} / \mathrm{s}^{2}\), the reading of the spring balance will be

371757 Figure represents the position-time graph of a body of mass \(4 \mathrm{~kg}\). Impulse \(\left(\mathrm{kg} \mathrm{ms}^{-1}\right)\) imparted to the body at \(t=0\) is

371758 If a car accelerates from \(20 \mathrm{~m} / \mathrm{s}\) to \(40 \mathrm{~m} / \mathrm{s}\) in 10 \(s\) and its forward thrust is equal to \(3 \mathrm{kN}\), what is the mass of car?

371759 A machine gun has a mass \(5 \mathrm{~kg}\). It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of \(400 \mathrm{~ms}^{-1}\). What force is required to keep the gun in position?

371760 A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads \(49 \mathrm{~N}\), when the lift is stationary. If the lift moves downward with an acceleration of \(5 \mathrm{~m} / \mathrm{s}^{2}\), the reading of the spring balance will be