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Sergio [31]
3 years ago
14

Susan goes out to exercise. She runs for one hour at a constant speed and velocity. What is the overall net force acting on Susa

n? A) The net force acting on the runner must be zero. Eliminate B) The net force depends on the pull of gravity on the runner. C) The net force acting on the object is pushing in the same direction the object is traveling. D) The net force acting on the object is pushing in the opposite direction the object is traveling.
Physics
2 answers:
IgorC [24]3 years ago
6 0

Answer:  A) The net force acting on the runner must be zero.

Explanation: i got the question & answer from usatestprep ..

kiruha [24]3 years ago
3 0

Option (A ) is correct.

Explanation:

susan is moving with constant velocity, so both the direction and magnitude of the velocity remains same. so the acceleration of susan =0. This is because an object gets accelerated when either the magnitude or direction of the speed changes.

now the force is given by

F= ma

F= force

m= mass

a= acceleration

Here a =0

so F= 0

so the net force on susan is zero.

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If the temp and pressure stay the same, 3 different pieces of the same material will have the same__________
valentina_108 [34]
The answer is Volume.
3 0
3 years ago
Suppose you calculated the speed of light in an unknown substance to be 4.00x10^8 m/s. How could you tell if you made an error i
Mice21 [21]

Answer: You could tell if you made an error in your calculations by repeating the steps.

Speed of light is the fastest/maximum in vacuum which is equal to 3 × 10^8 m/s, therefore speed of light through any material equal to 4 × 10^8 m/s is physically and theoretically impossible and therefore incorrect.

Explanation:

6 0
2 years ago
Which of the following is true of children with chronic illness? a.) They are all eligible to recievie special education service
ss7ja [257]

Answer:

c.) Their eligibility for social education services depends on whether their conditions adversely affect their educational functioning.

Explanation:

Chronic Illness is a human health condition in which a particular (or number of) illness is persistent in the body and the effects on the body are long-lasting and are often resistant to treatment. The word chronic is usually used when the disease/illness/sickness and its effects stay in the body for more than three months.

The likeliest answer from the options given is option C because before social education services are given, it has to be decided if their health condition adversely affects their education.

5 0
3 years ago
How much work does a student (m = 60 kg) do when he Climb a tower 80 m high?
gtnhenbr [62]

Answer:

W = 47040  J

Explanation:

Given that,

The mass of a student, m = 60 kg

Height of the tower, h = 80 m

We need to find the work done in climbing the tower. The work done is given by :

W = mgh

So,

W = 60 × 9.8 × 80

W = 47040  J

So, the required work done is 47040  J.

7 0
3 years ago
8.Which set of coefficients would
Viefleur [7K]

Answer:

The set of coefficients that would correctly balanced the equation

NaCl → Na + Cl2   is the option D

(2,2,1)

Explanation:

In this reaction sodium chloride splits into sodium and chlorine.

For balancing the equation we should have number of atom of the element in the left hand side equal to the number of atom of the same element in the right-hand side.

so here in left hand side only one sodium and one chlorine is given and in the right-hand side one sodium and two chlorine is given.

So for the balancing the equation both the side should be same.

So we will write the balanced equation as

2NaCl → 2Na + Cl2

So, right now it is balanced that is two sodium and two chlorine on the left hand side as well as the right hand side.

Hence the coefficients are

2, 2, 1

3 0
3 years ago
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