Question

Choose only the correct match from the following options given in order of Unit-- Physical quantity--scalar/vector: a) kg m/s2 – Momentum - Scalar b)kg m/s – Force --Vector c)kg m/s2 – Force—scalar d)kg m/s—Momentum--Vector

Answer 1

Question:

Choose only the correct match from the following options given in order of unit: (with correction)

* Here none quantity is scalar quantity!

$\begin{gathered}\boxed{\begin{array}{c|c|c}\\ \bf \: Case \: A & \bf \: Case \: B & \bf \: Case \: C \\ \\ \star \: \sf{kg \: ms^{-2}} & \sf{Momentum} & \bf{Vector} \\ \\ \star \sf \: {kg \: ms^{-1}} & \sf{Force} & \sf{Vector} \\ \\ \star \: \sf{kg \: ms^{-2}} & \sf{Force} & \bf{Vector} \\ \\ \star \: \sf{kg \: ms^{-1}} & \sf{Momentum} & \sf{Vector} \end{array}}\end{gathered}$

Answer:

$\begin{gathered}\boxed{\begin{array}{c|c|c}\\ \bf \: Case \: A & \bf \: Case \: B & \bf \: Case \: C \\ \\ \star \: \sf{kg \: ms^{-2}} & \sf{Force} & \sf{Vector} \\ \\ \star \sf \: {kg \: ms^{-1}} & \sf{Momentum} & \sf{Vector} \\ \\ \star \: \sf{kg \: ms^{-2}} & \sf{Force} & \bf{Vector} \\ \\ \star \: \sf{kg \: ms^{-1}} & \sf{Momentum} & \bf{Vector} \end{array}}\end{gathered}$

Additional information:

• Newton first equation of motion:

→ Every body maintain it's initial state of rest or motion with uniform speed on straight line unless an external force act on it. In short, an object continuous to be in a state of rest or of uniform motion along a straight line unless acted upon by an unbalanced force.

◆ It's also known to be law of Galileo or law of inertia.

Second law of motion:

→ The rate of change in momentum of a body is directly proportional to the applied force on the body and take place in the direction of force.

Third law of motion:

→ Every action is equal to every reaction but in opposite direction. In short, To every action, there is an equal and opposite reaction and they act on the two different bodies.