A 20 kg bike accelerates at 10 m/s2. What was the force?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

This is the substance(s) formed in a chemical reaction.