Question

An object at rest on a frictionless plane is pushed with a steady force of 10N for 8
seconds. Find its momentum at the end of 8th second.
please ans only if u know the correct ans, it's urgent and imp,
Please answer with complete steps
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Answer 1

☞Given :

→Applied force = 10N

→Initial momentum = zero (i.e., rest)

☞To Find :

⟶ Final momentum of object after the given interval of time.

☞SoluTion :

➢ As per Newton's second law of motion, Force is defined as the rate of change of linear momentum.

Mathematically, F = dP/dt

F denotes Force

dP denotes change in momentum

dt denotes change in time

➢ Momentum is defined as the product of masd and velocity.

⇒ F = (Pf - Pi) / dt

⇒ 10 = (Pf - 0) / 8

⇒ Pf = 10 × 8

⇒ Pf = 80 Ns

Answer 2

$\huge\red{Answer}$

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☆☞ [ Verified answer ]☜☆

force = mass × acceleration

since, the body is moving with a constant force,

therefore the initial velocity will be zero at t = 0

= force = mass × velocity / time force × time

= mass × velocity

= 10 × 8

since we know, that mass × velocity = momentum

So, momentum = 80 kg m/ s

jai siya ram☺ __/\__

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