Answer:
minimum two photogate
Explanation:
The photogate allows us to activate the measurement of time, so we must place at least two of them, one at the beginning of the movement to measure the initial time and another at the end of the movement to measure the final time, of course we must have measured the distance. This gives us the average speed between the two photocells
For measurements with more changes curves, slopes, one photogate must be placed at the beginning of the curve or slope and another at the end.
A. The Sun is the only star in the solar system (that we know of)
Have a lovely day!
B or D, one of these are the correct answer
<span>Steven universe has aired May 29, 2017, it is aired over the course of the series. Episodes are broadcast one a week with a 22-minute length per episode, it has 5 episodes per week.</span>