Physics, asked by ZENtalons, 11 months ago


Under the action of force F, a body is moving with a uniform acceleration of 5 m/s2. The force
required to produce a retardation of 10 m/s2 is
(A)-F
(B)-2 F
(C) 2F
(C) none of these​

Answers

Answered by ColdZera
23

Answer:

(B) -2F

Explanation:

Let the mass of the body be 'm'

By Newton's second law,

F = ma

⇒F = 5m ........ 1

Let F' be force required to produce a retardation of 10 m/s²

⇒F' = -10m.........2 (acceleration is negative because it is acceleration in opposite direction i.e deceleration

Dividing equations 1 and 2 we get,

\frac{F}{F'}  = \frac{5m}{-10m} = \frac{1}{-2}

⇒F' = -2F

Answered by vamsidharkousik
4

Answer:

THe answer will be -2F

Explanation:

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