Question

I need help with all of the questions! Thank you

1). Momentum (P) of an object is a vector quantity a) True b) False c) Can's say 5 m/s' is 2). Momentum of an object of mass 'm = 10 Kg' moving with a velocity v a) 50 Ns b) 50 Nm c) 50 N/s 3). How the force (F) and momentum (P) are related, do not forget to show the vector sign 4). For an isolated system, momentum is conserved a) True b) False c) Undetermined 5). A body of mass mi=10 Kg moving with velocity 5 m/s collides with another body (m2-20 Kg) at rest. Find their final velocities. 6). In an inelastic collision, total energy is conserved a) True b) False c) Can't say 7). In an inelastic collision, two objects of equal masses stick together and move with a final velocity a) Faster than their initial velocities b) Slower than their initial velocities c) Insufficient information 8). Center of mass of an object is the point where the weight of the object is centered a) True b) False c) Can't say 9). A system of two objects having masses mi=10 Kg and m2-20 Kg, displaced by 10 cm and 20 cm from the origin. What is the center of mass of the system? 10). The Linear mass density defined as a) mass/length b) mass/volume c) mass/density

Answer 1

since momentan is a product of mass & velocity 8 velocity is vector Regntity hence momentum is vector. @ True m.toky, ve sms P- mu- (10kg) (50) - 50 kg. ans & @TP = Song Force is disortly proportional to the ehangle in momenten(p) dt For gsolated system momentyn must be conserveof. 6 True mi lokg, V = 5 m/s m2 = 20kg, V2 = ?

For collision momenty must be conserve. ire P P21 mv - Mavz = 6 x5-2.5 m/s Y 2.5 mis an with Melastic collisions, some of the initial Kinetic Energy is lost to thermal or potential Energy Hence Kinetic Energy not conserral, in KEIZ KEF 5 faster than their initial velocitès of perfectly Melastic collision. Le case Tue сом: m, x,tmak2 - 2.**24 mitme 1 voto 10-20 0.16cm - 16.66 Com= ② @ muss/ Length

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