Question

. The branch of physics that deals with the effect of force on bodies is ............... .

(a) Mechanics (b) Acoustics

(c) Thermodynamics (d) Relativity


12. What helps to measure the magnitude of force?

(a) Velocity (b) Acceleration (c) Inertia (d) Momentum


13. Unit of momentum in SI system is ................ .

(a) kg m (b) kg m s–2

(c) kgm s–1

(d) kg2 ms

–2


14. Identify the vector quantity from the following.

(a) Mass (b) Potential (c) Force (d) All of these


15. Which is called the law of force?

(a) Newton’s first law (b) Newton’s secondlaw

(c) Newton’s third law (d) None of the above


16. SI unit of force is ...................... .

(a) newton (b) kilogram (c) newton metre (d) kilogram metre​

Answer 1

Answer:

scientific definition of linear momentum is consistent with most people’s intuitive understanding of momentum: a large, fast-moving object has greater momentum than a smaller, slower object. Linear momentum is defined as the product of a system’s mass multiplied by its velocity. In symbols, linear momentum is expressed as p = mv.

Momentum is directly proportional to the object’s mass and also its velocity. Thus the greater an object’s mass or the greater its velocity, the greater its momentum. Momentum p is a vector having the same direction as the velocity v. The SI unit for momentum is kg · m/s.

LINEAR MOMENTUM

Linear momentum is defined as the product of a system’s mass multiplied by its velocity:

p = mv