Two space stations are at rest relative to each other and are 6.0 × 107 m apart, as measured by observers on the stations. a spaceship traveling from one station to the other at 0.90c relative to the stations passes both of them, one after the other. as measured by an observer in the spaceship, how long does it take to travel from one station to the other?

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire