Which of the following is a type of object that might contain billions of stars? a. a solar system b. a galaxy c. an asteroid d. a planetary system

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?