Video Transcript

uh, so we're going to be solving trouble two and also checked she for that the corridor Coy physics textbook and were offered that there's a sixty eight kilogram astronaut. We're regarding find his wage. That's the mass of the astronaut. Or has to find his load on planet on the moon and on Mars as well as in external space. Travel a consistent velocity to part a, um, wait on planet we understand that method is a force. Maybe Reese thinking about weight is virtually just like mass. Yet masses, um, and inherit property of one object. And also the load is really a pressure that counts on the acceleration due to gravity. For this reason I'LL brand it W um however this is really force of gravity, generally labeled FT physics textbooks and this sequel come the Mass, simply like any kind of force mass time acceleration, except for the celebration, is Teo and also on Earth. We recognize that this is nine point eight approximately nine allude eight meter per second squared come play in the mass at the same time sixty eight times lug create, and this will be in brand-new ten's kilograms nears per 2nd squared, and we can put that into a calculator. Obtain six hundreds sixty six allude four and also remember, we only want report. The number of far-ranging digits the we're using, i m sorry is come significant, is it's nine allude eight sixty eight. For this reason this is roughly six hundreds seventy millions. Some part B because that asked to find this hair on the moon wherein were given that he's equal to one suggest seven communes per 2nd squared. So deserve to we just use the very same formula, her weight being Mt. And also he just We're gonna play this numbers in the calculator. Tho the sixty eight kilograms. And now we're not going to use nine suggest eight year for second squared. That's exploration due to gravity top top Earth. Money's the one point seven. If castle told us. Offered the trouble for the acceleration due to gravity on the moon and also then approximating Teo to far-ranging digits, girlfriend should gain one hundreds twenty Nunes part See, we're simply going to execute the specific same thing. They also tell us acceleration due to gravity. But on Mars three point seven year per second squared, Yeah, still making use of the same mask. It's all about the very same astronaut. Sixty eight kilograms. Oops! and also the prize of friend should acquire for that simply plugging into calculator approximating revolve fifteen unions and then party his work. It's different because we're now told the the asteroids in outer space not ~ above a planet, not feeling gravity and he's rolling a continuous velocity and on velocity is constant. It means that acceleration is zero attract narrow that this suggests equal zero because, remember, the acceleration is stuff have lost e transforms in time, but it's constant. That's what we're told in the problem. And also then wait is a force. This's equal to M A.


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But one a zero way equal come zero. So travelling and constant velocity in external space, there's simply no pressures acting ~ above the asteroid, so thank you because that listening.