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Answer:
The right solution is "0.50 m/s²". A further explanation is provided below.
Explanation:
The given values are:
Mass,
m = 50 kg
Speed,
v = 10 m/s
Rolling friction acting backward (south),
f = 10 N
Air resistance acting backward (south),
= 15 N
The total force acting will be:
⇒
On substituting the given values, we get
⇒
⇒
Now,
⇒
On substituting the given values, we get
⇒
⇒
The horizontal acceleration will be "0.50 m/s²" because the (-)ve sign indicates it in south direction.