Question

what force is required to accelerate an object javinh a mass of 3 kg at 5 m/s

Answer 1

Force (in newtons) = mass (in kg) x acceleration (m/sec)  

Therefore Force = 3kg x 5m/s ==> 15 newtons  

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75 newtons = m x 10 ==> 7.5kg  

I believe...?