Physics, Physics Terms Questions & Answers

Physics, Physics Terms Questions & Answers A boat moving at 4m/s north, with a wind coming from the east at 3 m/s gives you a net vector of what? - CORRECT ANSWER- 5m/s NE acceleration - CORRECT ANSWER- Change in velocity over change in time Acceleration - CORRECT ANSWER- the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change Applied Force - CORRECT ANSWER- a force which is applied to an object by a person or another object Balanced Force - CORRECT ANSWER- Two forces in opposite directions. Net force is zero and the motion of the object does not change. changing velocity - CORRECT ANSWER- either speed, direction, or both are changing; acceleration and forces are unbalanced constant velocity - CORRECT ANSWER- Constant speed and constant direction; forces are balanced Contact forces - CORRECT ANSWER- Contact forces work when two or more objects are touching. Some examples of this are: friction, air resistance, tension in ropes and normal contact force. When these two or more objects interact there is a force on both of them and is equal or opposite of the other object. displacement - CORRECT ANSWER- the total distance traveled by an object regardless of direction distance - CORRECT ANSWER- the amount traveled from a certain spot. distance-time graph (speed graph) - CORRECT ANSWER- A visual representation of how an object's position and speed are changing over time; ARCCS (Away/Returning, Constant/Changing speed, Stopped) Example of speed - CORRECT ANSWER- Nemo swims 58 m/s Example of velocity - CORRECT ANSWER- Nemo swims 37 m/s South to Wallaby Way in Australia. F = m x a - CORRECT ANSWER- Formula for Force force - CORRECT ANSWER- A push or pull exerted on an obje