Question

guys please solve the 6 questions it's urgent

Answer 1

⭐hey there!!

Given :- u = 20m/s

=> s = 50 m

Now use 3rd eqn of motion,

=> v² = u² + 2aS

Body comes to rest so v = 0

=> 0 = (20)² + 100a

=> a = - 400/100 = - 4 m/s² ( retardation)

=> mass = 1 kg

Force of friction is opposite to the direction of force

So, f = - ma = -1 × (-4) = 4 N

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⭐hope it will help u