2 years ago

True or false? A system must contain more than one object.

Physics

1 answer:

neonofarm [45]2 years ago

3 0

Answer:

true

Explanation:

normally -No system has ever performed well with one object.

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3 years ago

Amy is in-line skating. Her mass is 50 kg. She is rolling forward (north) on a flat section of road at 10 m/s. The rolling frict

Licemer1 [7]

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),

$F_T$ = 15 N

The total force acting will be:

⇒ $F = -f-F$

On substituting the given values, we get

⇒ $=-10-15$

⇒ $=-25 \ N$

Now,

⇒ $a = \frac{F}{m}$

On substituting the given values, we get

⇒ $=\frac{-25}{50}$

⇒ $=-0.50 \ m/s^2$

The horizontal acceleration will be "0.50 m/s²" because the (-)ve sign indicates it in south direction.

4 0

3 years ago