What can you say about objects whose actual speed vs. time curves are close to the theoretical speed vs. time line?

If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance. what is its vertical displacement (in m) after 6 s?

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

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?