A child is standing on the platform of a train station. The train is travelling 30 m/s and takes 3.0s to pass the child.
What is the length of the train?

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion