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Lostsunrise [7]
3 years ago
12

Explain why some objects fall faster than other objects,

Physics
1 answer:
Vikentia [17]3 years ago
8 0

objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.

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An applied force of 20 N is used to accelerate an object to the right across a
vichka [17]

Answer:

F_{norm} = 100 N

F_{net}=10 N

\mu = 0.10

m = 10 kg

a=1.0 m/s^2

Explanation:

To determine the normal force, we just need to analyze the situation along the vertical direction.

The box along the vertical direction is in equilibrium, so the equation of the forces is

F_{norm} - F_{grav} = 0

which means that

F_{norm} = F_{grav} = 100 N

The net force can be determined by looking at the situation along the horizontal direction (since the net force in the vertical direction) is zero. Here we have:

- An applied force of 20 N forward, F_{app} = 20 N

- A frictional force of 10 N backward, F_{frict} = 10 N

So, the net force is

F_{net}=F_{app}-F_{frict}=20-10 = +10 N in the forward direction

The expression for the frictional force is

F_{frict} = \mu F_{norm}

where \mu is the coefficient of friction. Solving for \mu,

\mu = \frac{F_{frict}}{F_{norm}}=\frac{10}{100}=0.10

The force of gravity is given by

F_{grav}=mg

where m is the mass of the object and g=10 m/s^2. Solving for m, we find the mass of the object:

m=\frac{F_{grav}}{g}=\frac{100}{10}=10 kg

Finally, the acceleration can be found by using Newton's second law

F_{net} = ma

where a is the acceleration. Solving for a,

a=\frac{F_{net}}{m}=\frac{10}{10}=1.0 m/s^2

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3 years ago
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Two charges are located on the positive X-axis of a
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Explanation:

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6 0
3 years ago
Read 2 more answers
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