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Aleks [24]
3 years ago
13

15 POINTS!!! WILL MARK BRAINLIEST IF CORRECT!!

Physics
2 answers:
Mnenie [13.5K]3 years ago
6 0

B) it is going straight nothing is acting on it

-BARSIC- [3]3 years ago
5 0

Answer:

B) in a straight line

Explanation:

  • According to the newton first law that states that the objects at rest will remain the same until and unless they are set in motion by some other object or any other external force acting on them that can change its motion.
  • Thus do not move without the creation of an unbalanced force, the <u>object will move in the same direction with the same speed and thus will flow in the same line.</u>
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Describe the relationship between Mass &amp; Acceleration (if you change one, what happens to the other):
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As mass increase acceleration decrease so the relationship is opposite

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From the deepest to the surface, what are the parts of the earth's interior?
shepuryov [24]

The answer is A: Core --> Mantle --> Crust.

Core: The earth's core is the center of the earth, which would ultimately be the deepest. The core is made up of alloy, which is a mixture of many medals, such as iron and nickel.

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3 0
3 years ago
You fire a projectile 35° above horizontal with an initial velocity of 200m/s. It lands in a valley 300m below the launch point.
Brilliant_brown [7]

Answer:

See below

Explanation:

Vertical component of initial velocity  =  200 sin 35° = 114.72 m/s

then use position formula      a = 9.81 m/s^2

  0  = 300 + 114.72 t  -  1/2 (9.81)(t^2)

            use quadratic formula with a = - 4.905    b = 114.72   c = 300

              to find t = <u>25.76 seconds </u>

<u />

To find the range

   ( horizontal distance the projectile lands from launch point)

Horizontal component of initial velocity    200 cos 35 = 163.83 m/s

 ( it flies horizontally at this speed for  <u>25.76 seconds <==found above</u>)

    163.83  m/s  *  25.76 s = <u>4220.3 meters</u>

3 0
2 years ago
3. Two spherical objects at the same altitude move with identical velocities and experience the same drag force at a time t. If
Daniel [21]

Answer:

Object 2 has the larger drag coefficient

Explanation:

The drag force, D, is given by the equation:

D = 0.5 c \rho A v^2

Object 1 has twice the diameter of object 2.

If d_2 = d

d_1 = 2d

Area of object 2, A_2 = \frac{\pi d^2 }{4}

Area of object 1:

A_1 = \frac{\pi (2d)^2 }{4}\\A_1 = \pi d^2

Since all other parameters are still the same except the drag coefficient:

For object 1:

D = 0.5 c_1 \rho A_1 v^2\\D = 0.5 c_1 \rho (\pi d^2) v^2

For object 2:

D = 0.5 c_2 \rho A_2 v^2\\D = 0.5 c_2 \rho (\pi d^2/4) v^2

Since the drag force for the two objects are the same:

0.5 c_1 \rho (\pi d^2) v^2 = 0.5 c_2 \rho (\pi d^2/4) v^2\\4c_1 = c_2

Obviously from the equation above, c₂ is larger than c₁, this means that object 2 has the larger drag coefficient

8 0
3 years ago
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