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Force and Motion Rev
Review for the Force and Speed
| Question | Answer |
|---|---|
| A force | is a push or pull that causes an object to move, stop, or change direction |
| In physics a force is anything that makes an object | accelerate |
| Forces come in | pairs |
| Forces have a | magnitude and a direction |
| Force is represented by | arrows that show magnitude and direction. |
| Force is measure in | Newtons |
| If forces are balanced | the object's motion doesn't change |
| If forces are unbalanced the object will do one of the following things | Begin to move Stop moving Change direction Speed up Slow down |
| Balanced forces are | equal in size and opposite in direction |
| An unbalanced force always causes | a change in motion |
| When unbalanced forces act in opposite directions you can find the | net force by subtracting |
| Net force | The difference between the two forces |
| Direction for force is determined by | Direction of the largest force |
| Calculate speed by | distance divided by time |
| A champion jumping frog can jump 2.5 m every 4 s. What is the jumping frog’s average speed | .625m/s |
| Joe’s family traveled from New Jersey to Maine. The distance was 500 miles, and it took 9 hours with no stops. How fast was Joe’s family traveling? | 55.5m/h |
| Time is graphed on the | x axis |
| Distance is graphed on the | Y axis |
| Position is graphed on the | y axis |
| Speed is graphed on the | y axis. |
| A position graph shows | where the object is located at a particular time. |
| A distance graph shows | how much distance an object has traveled in a particular time. |
| Motion is a change in | position measured by distance and time. |
| Speed tells us the | rate at which an object moves. |
| Velocity tells the | speed and direction of a moving object. |
| Acceleration tells us the | rate speed or direction changes. |
| On a graph of distance vs. time, a horizontal line means that the object is | at rest |
| On a graph of distance vs. time, constant speed is shown by | a diagonal straight line. |
| A straight horizontal line on a speed vs. time graph represents | constant speed. |
| Distance is measured in | meters (cm, km, m, mm) |
| Time is measured in | hours, seconds, minutes, days, weeks, there are many others |
| Speed is represented by | meters/second (m/s), kilometers/hour (km/hr), miles/hour (mi/hr) there are many others |
| Velocity is represented by | m/s west, km/hr north, cm/s up, there are many others. |
Created by:
tkhenry4
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