Question

help?

Answer 1

An astronaut who weighed 765 newtons on Earth found that his weight on Jupiter was 1800 newtons. While visiting Jupiter, he captured an alien that weighed 1200 newtons on Jupiter. What will be the alien's weight on Earth?
A. 443 newtons
B. 510 newtons
C. 742 newtons
D. 985 newtons

Answer 2

Plz explain the why the answer is that answer

Answer 3

First thing you have to is find the person's mass by dividing 765 N by earth's gravitational acceleration constant. Then use that mass and F=mg to find the gravitational constant on Jupiter. Then use that gravitational constant and F=mg to find the alien's mass.

Answer 4

It's a big chain of plug and chug

Answer 5

So I divide 765 by 1800?

Answer 6

So obviously you're not familiar with the widely known gravitational constant of 9.81 m/s^2.

We use this constant to calculate a lot of parameters in physics problems: weight, velocity, acceleration, etc.

Answer 7

So your first step is to divide 765 N by 9.81 m/s^2. According to Newton's Law, \(F=ma\). So dividing the force (in N) by the acceleration (m/s^2), will give you the mass (kg)

Answer 8

😐?

Answer 9

What class is this for?

Answer 10

This is math

Answer 11

why?

Answer 12

Just curious. It's a simple physics problem, but it seems too far out to be for a math class. It's a math problem, but physics oriented.. It seems that they left out a big part of how to solve the problem.

Anyway, there's a constant called Earth's gravitational acceleration constant. It has an estimated value of 9.81 m/s^2. All objects are constantly under gravity's influence, and therefore always are under the influence of this acceleration due to gravity. A person's weight, is just that person's mass times this constant.

Answer 13

Weight can either be given in units of pounds (lb) or Newtons (N). Both are units of force.

Answer 14

I just need to know how to get my answer

Answer 15

I am going to do that

Answer 16

oh, lol

Answer 17

But I'm more irritated that it seems that they have not given you the blasted constant. Math courses should not teach nor involve physics and problems related.

Answer 18

Anyway, there's a law in physics that says that a force is equal to an objects mass multiplied by the acceleration of that object.

Answer 19

Numerically speaking,\[\huge \text{F}=ma\]
but in our scenario, the acceleration is g, the gravitational acceleration constant. So here we can just say that\[\huge \text{F}=mg\]

Answer 20

they arent! they are just giving an example, can you plz solve the question instead of judging that like "oh they added physics" and "oh they didnt do this right"or "this is not correct and has physics involed"

Answer 21

lol

Answer 22

If you haven't noticed, rainbow_rocks03, I'm explaining it to you.

Answer 23

I know. :)

Answer 24

Then do not make petty remarks like that.

Answer 25

:o

Answer 26

Moving forward here:
We have to manipulate and use the equation F=mg a bunch of times to find the weight, the gravitational constant on Jupiter. Each planet has a different influence by gravity and experiences different acceleration due to gravity. That is why on the moon, astronauts "float." The acceleration and force due to gravity is smaller than on Earth.