What is free fall? Explain it in brief.

1 answer:

3 0

· free fall is any motion of a body where gravity is the only forceacting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it.

You might be interested in

What is the acceptable level for chlorine

Katena32 [7]

The EPA requires treated tap water to have a detectable level of chlorine to help prevent contamination. The allowable chlorine in drinking water (up to 4 parts per million) pose “no known or expected health risk [including] an adequate margin of safety.”

8 0

2 years ago

How much do a steel BB weight?

pychu [463]

Each BB 0.349 grams and 5.386 grains. 349 mg & 5.386 grains each steel BBs.

6 0

2 years ago

A truck has shock absorbers with a spring constant of 24200 N/m. When it hits a bump, it oscillates at 0.429 Hz. What is the mas

siniylev [52]

Answer:

3331.5 kg

Explanation:

Given:

Spring constant of the spring (k) = 24200 N/m

Frequency of oscillation (f) = 0.429 Hz

Let the mass be 'm' kg.

Now, we know that, a spring-mass system undergoes Simple Harmonic Motion (SHM). The frequency of oscillation of SHM is given as:

$f=\frac{1}{2\pi}\sqrt{\frac{k}{m}}$

Rewrite the above equation in terms of 'm'. This gives,

$2\pi f=\sqrt{\frac{k}{m}}\\\\Squaring\ both\ sides,\ we\ get:\\\\(2\pi f)^2=\frac{k}{m}\\\\m=\frac{k}{4\pi^2 f^2}$

Now, plug in the given values and solve for 'm'. This gives,

$m=\frac{24200\ N/m}{4\pi^2\times (0.429\ Hz)^2 }\\\\m=\frac{24200\ N/m}{4\pi^2\times 0.184\ Hz^2}\\\\m\approx3331.5\ kg$

Therefore, the mass of the truck is 3331.5 kg.

3 0

2 years ago

What is the average speed of a plane that flies 7,200 km in 9 hours?

Mnenie [13.5K]

First of all, the formula for speed is;
Speed=distance/time
From the question, you have;
distance=7,200km
Time=9 hours
So that will be;
Speed=7200/9
When divided, you will have;
Speed=800
The unit for speed is km/hr or m/s. So that will be;
Speed=800km/hr
Hope that helped, have a nice day

6 0

2 years ago

Expain why a spinning top will not remain in motion forever

tankabanditka [31]

I think the force of spinning it can only hold for so long and because of gravitys pressure.(i hope i helped) :)

6 0

2 years ago

What is free fall? Explain it in brief.​

What is free fall? Explain it in brief.