Physics, asked by ddamureddy, 1 month ago

how to write using Newton formula as word problem please help me its an exam​

Answers

Answered by vardhanaditya2021
0

Answer: Suppose an object of mass, m is moving along

a straight line with an initial velocity, u. It is

uniformly accelerated to velocity, v in time, t

by the application of a constant force, F

throughout the time, t. The initial and final

momentum of the object will be, p1

= mu and

p2

= mv respectively.

The change in momentum ∝ p2 – p1

∝ mv – mu

∝ m × (v – u).

The rate of change of momentum ∝

m v u × − ( )

t

Or, the applied force,

F ∝

m v u × − ( )

t

× − ( )

=

km v u

t

F (9.2)

= kma (9.3)

Here a [ = (v – u)/t ] is the acceleration,

which is the rate of change of velocity. The

quantity, k is a constant of proportionality.

The SI units of mass and acceleration are kg

and m s-2 respectively. The unit of force is so

chosen that the value of the constant, k

becomes one. For this, one unit of force is

defined as the amount that produces an

acceleration of 1 m s-2 in an object of 1 kg

mass. That is,

1 unit of force = k × (1 kg) × (1 m s-2).

Thus, the value of k becomes 1.

F = ma

Explanation:

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