Using lorentz transformations, verify that the space-time interval as an invariant quantity (i. e., show that its value does not change in different frames of reference).

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?

You are an astronaut working on the international space station. accidentally, you let go of the handhold and drift off towards earth. the illustration, below, includes the details of your position (not drawn to scale). i’m a little stuck on the gravitational force felt by the astronaut from the iss. a little ?