Calculating km/hr from engine rpm - Physics Forums
2011年4月12日 · So by very rough calculations, at 1500 RPM the wheels are turning at about 100 RPM. Each revolution of the wheel is ~ 2m, so the wheels are covering about 200 m/min. That works out to 12,000 m/hr or about 12 Km/hr, which is the same as what you got. I think this is a reasonable result. The transmission in this vehicle is geared extremely low.
Converting km/hr to m/s^2: What is the Formula? - Physics Forums
2011年9月2日 · Homework Statement Convert 83km/hr to m/s^2 Homework Equations Simple I know...but I still can't figure it out The Attempt at a Solution... Insights Blog -- Browse All Articles -- Physics Articles Physics Tutorials Physics Guides Physics FAQ Math Articles Math Tutorials Math Guides Math FAQ Education Articles Education Guides Bio/Chem Articles ...
A projectile is shot straight up from the Earth's surface
2013年4月16日 · Homework Statement A projectile is shot straight up from the Earth's surface at a speed of 1.10×10^4 km/hr Homework Equations mgh=.5mv^2 The Attempt at a Solution I converted the speed to m/s and 3055.5556 m/s masses cancel out so i get 9.8h=.5v^2 I plugged in v and solved for...
Calculating Work Needed to Stop a 1100 kg Car - Physics Forums
2007年11月13日 · Homework Statement How much work must be done to stop a 1100 kg car traveling at 118 km/hr? Homework Equations Ei + W= Ef KE= 1/2mv^2 The Attempt at a Solution KE= 1/2mv^2 118kmx1000m/360s= 327.78 327.78^2= 107437.76 107437.76x1100= 118181537.9 118181537.9/2 =...
Need help finding the banking angle of a curved road please
2010年10月9日 · A highway curve of radius 500m is designed for traffic moving 90 km/hr. What is the correct banking angle of the road? I made a force diagram and wrote out the sums of the forces in the x and y then tried to solve for theta I got: sumFx= -nsin theta=ma=mv^2/r and sumFy= -mg+ncos theta=0 --> n=mg/cos theta then substituted n into the first
How do you convert m/s^2 to km/h? - Physics Forums
2004年9月22日 · A bus traveling at +29 km/h accelerates at a constant +3.7 m/s2 for 6.3 s. What is its final velocity in km/h?
I have a question about an airspeed/groundspeed word problem
2013年3月15日 · A plane is heading due south and climbing at the rate of 60 km/hr. If its airspeed is 540 km/hr and there is a wind blowing 110 km/hr to the northwest, what is the ground speed of the plane? Homework Equations Pythagorean theorem The Attempt at a Solution √(540^2+110^2).
How Do You Calculate the Maximum Height of a ... - Physics Forums
2006年3月19日 · A projectile is shot straight up from the Earth's surface at a speed of 6000 km/hr.How high does it go? i started out by converting km/hr to m/s so i got 6000km/hr= 1666.666666m/s then i used this formula: v^2=2gy and i got: y= 141723 m= 141.723km (i just got lucky that my answer was close) the correct answer wass 145 km
How to Find the Wind Component Parallel to a Dash Vector?
2009年1月22日 · A 100 meter dash is run on a track in the direction of the vector v = 4i + 7j. The wind velocity w is 5i + j km/hr. The rules say that a legal wind speed measured in the direction of the dash must not exceed 5 km/hr. Find the component of w which is parallel to v. Homework Equations The Attempt at a Solution I have no idea to solve this problem
Finding the Direction of an Airplane Given Airspeed and Cross …
2010年9月9日 · Homework Statement An airplane is flying at an airspeed of 620 km/hr in a cross wind that is blowing from the northeast at a speed of 50km/hr. In what direction should the plane head to end up going due east? Homework Equations v+w=(xi+yj), trig …