science forces and motion

In science, I have done forces and motion and I have been doing calculating speed.

this is an Example

  ߡd＝  change in distance

ߡT ＝ change in time

A car travels 120 metres in 16 seconds.  calculate the speed of the car.

formula＝ v=ߡd/ߡT 

working  ＝120m/16s

speed＝ 7.5ms-1

If you want to find the answer you put in google the number of minutes and the amount and put enter and you will find the answer.

You will always need to put ms-1 on the end of it so they know what it is.

what thing would you calculate speed?

YOU can calculate the speed by dividing the distance travelled by the amount of time it took.

YEAR 11 STUFF

IN science I did the plane drop. I was trying to find out what plane drop the longest. And there were six planes the six one was the longest to drop.

AIM;
to investigate the relationship between wing size and drag.

Equipment;
stopwatch, 4 papper planes (oppsite page), a ppaper clip, scissors, meter ruler.

Method;
1. cut out and assemble the four helicopters shown on the opposite page. Attach the paper clip to one of the helicopters.
2. one member of your group holds the helicopter at a height of 2 meters.
3. on the count of three, the person holding the helicopter drops it, while another member of your group times how long it takes for the helicopter to hit the floor.
4. record your results in the table below.
5. Repeat each drop three times.
6. Repeat steps 2-5 using the other helicopter models.


Conclusion;
the planes land at different times. Some land at a shorter time and some land at more time.