Speed equation?
how would i find the speed of the train in this problem:
In the 1950s, an experimental train that had a mass of 2.60 104 kg was powered across a level track by a jet engine that produced a thrust of 5.25 105 N for a distance of 509 m. Assume that air resistance is...
Confusing problem? HELP please!
i am trying to solve this problem:
In the 1950s, an experimental train that had a mass of 2.60 X 10^4 kg was powered across a level track by a jet engine that produced a thrust of 5.25 X 10^5 N for a distance of 509 m. Assume that air resistance is...
Homework Statement
A quarterback threw a football at 21 m/s at a certain angle above the horizontal. If it took the ball 2.7 s to reach the top of its path, how long was it in the air?
Homework Equations
i am confused, although you guys may find this to be simple. wat equations do i...