Sam is planning an investigation of the stars visible from his back yard. Which instrument
would help Sam be most successful with his observation?

What was the first instrument to ever record an earthquake?

Which composition of water moves to begin a deepwater current?

Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b