Table of Contents
What 2 things must you know to determine speed?
Chapter 19 – Motion
| Question | Answer |
|---|---|
| What two factors determine speed? | distance & time |
| What is the difference between speed and velocity? | Velocity has direction speed does not. |
| What best represents acceleration as presented on a graph? | velocity change vs. time |
| What is force? | a push or pull acting on an object. |
What factors make up speed?
All text and images provided by Human Kinetics. Two factors that determine running speed are stride cadence and stride length. Stride cadence refers to the number of strides taken per second, and stride length refers to the distance traveled by each stride.
What information is needed to measure speed?
The equation for speed is simple: distance divided by time. You take the distance traveled (for example 3 meters), and divide it by the time (three seconds) to get the speed (one meter per second).
Why would you want to know the speed of an object?
We need to know the speed of an object so that we can predict the time it takes to travel at a certain speed and distance. Example a GPS tells you the time it takes to arrive to your destination depending on the speed your going.
What makes something fast?
To expedite something is to make it go faster or speed up the process.
What 3 things combined will determine your speed?
Tellez listed three factors that determine running speed – stride frequency, stride length and anaerobic endurance. According to him, all three of these factors can be improved.
What factors determine sprint speed?
Two factors that determine running speed are stride cadence and stride length. Stride cadence refers to the number of strides taken per second, and stride length refers to the distance traveled by each stride. The product of these factors gives a mathematically accurate description of running speed.
What instrument is used to measure speed?
speedometer
speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled.
How do you calculate the speed of an object?
The equation for speed is simple: distance divided by time. You take the distance traveled (for example 3 meters), and divide it by the time (three seconds) to get the speed (one meter per second). Calculating the speed of an object, therefore, requires you to measure a distance and the time it takes to travel that distance.
Which is an example of speed in physics?
In physics this number is represented by the letter “c.”. The first scientist to measure speed as distance over time was Galileo. A speedometer is a great example of instantaneous speed. The speed of light can also be written as 186,282 miles per second. The speed of sound in dry air is 343.2 meters per second.
Which is the correct way to measure speed?
Speed = Distance/Timeors = d/t. How to Measure Speed. In the United States we mostly think of speed in miles per hour or mph. This is the way the speed of a car is typically measured. In science and physics the standard unit of measure for speed is generally meters per second or m/s.
How is the average speed of a car calculated?
The car may be travelling at 50 mph at this moment, but it may slow down or speed up during the next hour. Average Speed – The average speed is calculated by the distance that an object traveled over a given interval of time. If a car traveled 50 miles over the course of one hour then its average speed will be 50 mph.