A book has a mass of 50 grams and an acceleration of 5 m/s/s. What is the force on the book?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

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.

What is friction? how does it affect the motion of an object?