subject
Physics, 02.08.2021 18:20 sky724

A roller coaster is traveling 13 m/s when it approaches a hill that is 400 m long. Heading down the hill, it accelerates at 4.0 m/s squared. What is the final velocity of the roller coaster?

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 00:30
Comedians like to joke that the reason we haven’t been visited by intelligent life from elsewhere in the universe is that aliens have been monitoring earth’s broadcasts of intellectually embarrassing tv programs, like gilligan’s island, fear factor, the jersey shore, and the jerry springer showand so consider us far too primitive to merit a visit. let’s check the assertion that aliens could have been receiving them. tv programs are broadcast at a frequency of about 100mhz with about 100kw of total power in 30frames per second, which emanatesroughly uniformly in all directions. assume that interstellar space transmits these broadcasts without attenuation. no matter how smart they are, aliens would require at least one photon per frame to interpret our signals. findthe number of photons per unit time per unit area reaching a receiver on a possible planet in the nearest star system, which is about 4 light-years away (a light-year is the distance light travels in a year). if aliens aimed a receiver or detector directly at earth, how big (in diameter) would it have to be to receive a photon per frame
Answers: 2
question
Physics, 22.06.2019 10:00
What is the temperature in degrees celsius of a substance with a tempature of 49k
Answers: 2
question
Physics, 22.06.2019 13:00
Which of the following are appropriate acceleration units?
Answers: 1
question
Physics, 22.06.2019 14:10
Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
You know the right answer?
A roller coaster is traveling 13 m/s when it approaches a hill that is 400 m long. Heading down the...
Questions
question
Mathematics, 29.06.2019 12:00
question
Social Studies, 29.06.2019 12:00
question
Mathematics, 29.06.2019 12:00
Questions on the website: 13722367