Recent content by Jonathan Teas

Homework Statement A light plane is headed due south with a speed of 185km/h "relative to still air". After 1.0hr, the pilot notices that they have only covered 136km. And that their direction is Southeast 45 degrees. What is the wind velocity? Homework Equations Im guessing you have to...

What do you mean by something pulling at the block all foces are gone besides the blocks own weight.a = Δv/Δt i think that's the equation that you are referring too.

by four-fold doesn't that mean its divided by four which would indicate speed decreasing. for c, gravity is doing double the pull on the object so if gravity is doubled would speed be halfed or...what other relavent equation is there...speed=d/t, d=1/2at^2,a=d/t

Homework Statement ok this is the scenario: just supppose you had a block of ordinary ice on a frozen lake. Of course, it is free from all friction. Now, suppose some continuous, constant force acts on the block in a horizontal direction. after some time, the force is stopped so the speed of...

Homework Statement If the polar icecaps melted, the resulting water would spread over the entire earth. This new mass distrubtion would tend to make the length of a day: a.longer,b.shorter,c.be unchanged,d.explode Homework Equations Mass does distribute uniformly but I am not sure how...

Hi, I am currently enrolled in a physics 101 class and I am trying to understand a concept/question. "If the sun collapsed into a black hole, the Earth gravitational attraction would be a.same,b.more,c.less,d.none of these I don't even know where to start, we never even went over black...

Thank you: Newtons laws can explain anything in kinamatics lol

Hello, I am taking a college level physics course and have a question. Heres the question... "Acompact car and a large truck have a head-on collision. Durring the collision, which vehical, if either, experiences:" a. the greater force of impact? please explain b. the greater impulse...

Homework Statement A mover loads a 186kg refrigerator into a moving van by pushing it up a 10.0m friction free ramp at an angle of inclination of 11.0degrees. How much work is done by the mover thats all that was given.Homework Equations w=(F)(d)...work is =force times displacement The Attempt...

If IMA= Distance traveled by effort/ distance traveled load then IMA= 4.3m/1.2m=3.58 then no unit? so the answer is 3.11no unit again/3.58=(0.87)100=87% Thank you very much.

Homework Statement A washing machine that weighs 1400N must be put into a delivery truck bed that is 1.2 m off the ground. A worker uses a force of 450N to push the machine up a ramp that is 4.3m long. What is the efficiency of the inclined plane?Homework Equations e=(MA/IMA)100---- efficiency...

Homework Statement A 24.0kg dog running at a speed of 3.0m/s jumps onto a stationary skateboard that has a mass of 3.6 kg how long will it take a force with a magnitude of 9.0 N to stop the skateboard and the dog? Homework Equations F(change in time)=Pf-Pi P=MV The Attempt at a...

Kinetic Friction Force=the product of the coefficient of the kinetic friction AND the normal force "Ffk=μkFn"