A body of mass 2kg having a velocity of 2 m/s is brought to rest within a distance of 2m. Find the force acting on the body?

8 N

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1 N

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4 N

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2 N

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Solution

The correct option is D 2 N
Acceleration :

v² = u² -2as (v is final velocity, u is initial velocity and a is acceleration)

v = 0m/s; as the object comes to rest

u = 2 m/s and s = 2m

Thus, acceleration = 1 m/s

F = ma;

F = 2*1 = 2 kg-m/s²

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A body of mass 2kg having a velocity of 2 m/s is brought to rest within a distance of 2m. Find the force acting on the body?

The correct option is D 2 NAcceleration : v2 = u2 -2as (v is final velocity, u is initial velocity and a is acceleration) v = 0m/s; as the object comes to rest u = 2 m/s and s = 2m Thus, acceleration = 1 m/s F = ma; F = 2*1 = 2 kg-m/s2

The correct option is D 2 N
Acceleration :

v² = u² -2as (v is final velocity, u is initial velocity and a is acceleration)

v = 0m/s; as the object comes to rest

u = 2 m/s and s = 2m

Thus, acceleration = 1 m/s

F = ma;

F = 2*1 = 2 kg-m/s²