Do wormholes exist ? ? is it possible to traverse to the other side of the universe ?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

=force × distance a. work b. velocity c. pressure d. momentum

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?