Recent content by v0rtexza

I may be wrong here but if the initial velocity will as it states the question cause the object to oppose the force of gravity. As the object moves up due to the force that the man threw it up, gravity is acting on it. Eventually gravity will slow the object down to 0 (at its heighest point...

The problems above concern vertical projectile motion. In order to do this effectively, you must remind yourself of the equations of motion for constant linear velocity. vf = vi + aΔt Δx = viΔt + 1/2 aΔt^2 vf^2 = vi^2 + 2aΔx Δx = ([vi+vf]/2)Δt (Where ^2 = squared, vf = final velocity, vi =...

Ok well in that case, there are 10 consecutive crests so there is 9 wavelengths so I am told that the distance between all 10 crests is 360 mm so then 360/9 = 40 mm so the wavelength is 0.04 m?

I believe that I realized my mistakes, is the second solution I posted above still incorrect?

I looked at the question again and I think I solved it, I was calculating frequency wrong. f = 1/period and period is the time taken for one wave to move exactly one wavelength which is 2.5 seconds. So f = 1/2.5 = 0.04 Then wavelength is 0.04 m And finally v = fλ so v = 0.04 * 0.04 =...

Homework Statement The distance between 10 consecutive crests of transverse waves is 360mm. A crest covers a distance of 40 mm in 2,5 seconds. Calculate the speed, frequency and wavelength of the waves. Homework Equations Period: The time taken for one complete vibration Frequency: The...

Yeah, sorry about that!

Homework Statement A car of mass 900 kg accelerates up a slope. The velocity of the car at the bottom of the slope is 5 m/s. By the time the car reaches the top of the slope, its velocity is 15 m/s. The slope is 8m high from the ground and has a length (radius - angled length - not base) of...

Ok thanks, the memo said otherwise and I really couldn't figure out how it was getting Ua and Ub both as positive and implying that they were moving in the same direction...

Homework Statement A 750 kg car is traveling north at 54 km/h while a 1200 kg truck travels south at 83 km/h. The two vehicles are about to have a head-on collision. 1.1) Convert the speed's of both car's into m/s. 1.2) After impact, the car rebounds backwards with a velocity of 18 km/h...

Thanks!

If there is any more information required, Please don't hesitate to ask... I think I am right but I do not have the answers to 1.4) and would rather be safe than sorry!

I am having trouble on the fourth part of a question that states calculate the impulse exerted by the wall on the ball. The original question was: A ball of mass 300 g is thrown against a wall with a speed of 15 m/s. The ball rebounds elastically off the wall. The original questions were...