Recent content by Ellen W.

The net force would have to be zero. Does this mean that they are equal?

Homework Statement A 50.0 kg 6.00m awning is held up by a wire in the middle. A 15kg sign hangs at the end. Calculate the tension in the massless wire and the magnitude of the net force from the wall acting on the awning. The cable forms a 40 degree angle with the awning at the bottom right...

Oh, wow. So I would just plug in 13.85 as initial velocity instead of 9.76? Thank you so much! :)

How would I get velocity just before the collision? I wouldn't know either velocity to plug into the equation, nor do I know the time so I can't use the other kinematic equations.

Oh, so the friction being solved for is kinetic, since the car tires are skidding as opposed to rolling? I tried doing what Kaura said, but got a completely different answer then before. -Ff=ma Ff=mg(coeff. friction) -Mgcoff.fricti.=ma a=-7.0632 9.762=vo2+2(-7.0632)(312) Vo2=67.102m/s=150mph...

Homework Statement A car hits another car at rest. Debris is found 6.75m from the cars, the two cars stuck together over a distance of 6.75m, there are skid marks a distance of 312m before the car crash, car 1=2946kg, car2=1232kg, coefficient of friction is .72. Find the initial velocity of car...

Homework Statement Find Fg if G=6.67*10-11m3 kg-1s-2, M=2.6*1023 kg, m=1200kg, and r = 2000m Homework Equations Fg= -GMm/r2 The Attempt at a Solution Fg=-GMm/r2 Fg=- (6.67*10-11m3kg-1s-2)(2.6*1023 kg)(1200kg)/(2000m)2 Fg=- (6.67*10-11m3kg-1s-2)(2.6*1023 kg)(1200kg)/4000000 m2 Fg= -...