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Doss [256]
3 years ago
14

A student repeats a reaction several times to test the effects of various

Physics
1 answer:
GREYUIT [131]3 years ago
5 0
I would pick answer option A
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a rocket with a mass of 4kg accelerates up from the ground at a rate of 20ft m/s^2, what is the drag force acting on the rocket
Maru [420]

The drag force acting on the rocket is 80N.

<h3>Give an explanation of drag force?</h3>

The divergence in velocity between the fluid and the item, also known as drag, exerts a force on it. Between the liquid and the solid object, there should be motion. Drag is absent in the absence of motion.

The air molecules are more compressed (pushed together) on the surfaces that are facing the front while being more dispersed (spread out) on the surfaces facing the back. Turbulent flow, which occurs when air layers split from the surface and start to swirl, is what causes this.

The drag force acting on the rocket F = ma

Given,

m = 4kg, a = 20ftm/s²

Substituting m and a values in the above formula,

The drag force acting on the rocket F = 4×20

The drag force acting on the rocket F = 80N.

To know more about drag force visit:

brainly.com/question/15144984

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8 0
2 years ago
How does increasing the resistance affect the current
zepelin [54]
Ohm's law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R). Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change.
3 0
3 years ago
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1. How long would the car in Sample Problem C take to come to a stop from its initial velocity of 20.0 m/s to the west? How far
Brilliant_brown [7]

The time taken, and the distance travelled by the car before stop, will be 5.3 second and -53.3 m west.

<h3>What is the distance?</h3>

The length of the path traveled by the body is known as the distance covered by the body.

Distance is a 1-dimensional phenomenon. its unit is a meter(m). The distance can be found by the product of velocity and time.

The given data in the problem will be

u is the initial velocity =20m/sec

t is the time =?

d is the distance =?

From the Newtons second law;

\rm  F \triangle t = \triangle P \\\\ \triangle t = \frac{\triangle P }{F} \\\\ \triangle t = \frac{m(v_f-v_i)}{F} \\\\ \ \triangle t = \frac{2240 (0-20))}{8410} \\\\ \triangle t = 5.3 \ sec \\\

The distance travelled before the car stop is,

\rm \triangle t = \frac{1}{2} (v_f+v_i)\traingle t \\\\ \traingle x = \frac{1}{2} (-20+0)5.3 \\\\\ \triangle x= -53.3 m \ west

Hence,the time taken, and the distance travelled by the car before stop, will be 5.3 second and -53.3 m west.

To learn more about the distance, refer to the link;

brainly.com/question/989117

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6 0
2 years ago
When an object is heated it …………… and when it cools it …………………..
omeli [17]

Answer:

When an object is heated it Expand and when it cools it Contract

Explanation:

One of the effect of heat on matter is expansion. An increase in the temperature of an object causes it to expand and a decrease causes it to contract

4 0
3 years ago
Help pls... 100points
Amanda [17]
A, b, d, c, c, d, a, b, c, b, ultrasound, sound, sonar, harmonics, vibration, true, false, false, true, true
4 0
3 years ago
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