Question

the velocity of an object of mass 50 kg increases from 3 metre per second to 12 metre per second what will be the force required for this​

Answer 1

FORCE=MASS×ACCELERATION

ACCELERATION = (FINAL VELOCITY -INITIAL VELOCITY) / TIME

SO. ACCELERATION IS EQUAL TO

$(12 - 3) \div 1seconds$

=9m/s

mass=50kg

so, force =50×9

=450N

ANSWER : 450 Newton

Answer 2

ANSWER

m=50kg

Given the initial velocity = u = 3 m/s

Final velocity = v = 12 m/s

There for acceleration = v-u =9 m/s

Given mass = 50 kg

We know that,

F =ma subsituting we get,

F= 50 × 9

F= 450N

that's answer

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