an object of mass 2 kg is sliding with a velocity of 4 metre per second on a frictional horizontal surface the retarding force necessary to stop the object in one second
Answers
Answered by
23
Answer:
8 Newton
Explanation:
The acceleration required is
a = Change in velocity / Time
= (0 m/s - 4 m/s) / (1 s)
= -4 m/s²
(Negative sign indicates that acceleration is in the direction opposite to that of motion of object)
Force = ma
= 2 kg × (-4 m/s²)
= -8 kg m/s²
= -8 N
(Negative sign indicates that force should be applied in the direction opposite to that of motion of object).
∴ Retarding force = 8 N
Answered by
10
Answer:. -8 is the correct answer
Explanation:u=0m/s
A=v-u/t
=0-4/1
=-4 so,there is a negative acceleration or(retardation)
Now,Force=mass×acceleration
F=2×-4
F=-8
Answer.........
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