At exactly 2:00 pm, sophy the snail crawls onto a meter stick at the 10 cm mark. If he reaches the 65 cm mark at exactly 2:10 pm, what is her speed?

Sophy travels 55 cm in 10 minutes.

Divide 55 by 10 to find his speed per minute.

An Earth's plate moves at the speed of 45mm/yr. How far will the plate move in 100years?

45 * 100 = ?

Then change that answer to meters.

To calculate the speed of Sophy the snail, we need to determine the distance covered and the time taken. In this case, the distance covered is calculated by measuring the difference between the starting position and the final position of Sophy on the meter stick, which is 65 cm - 10 cm = 55 cm.

Next, we need to determine the time taken by subtracting the starting time from the ending time. In this case, Sophy takes 10 minutes, which is equivalent to 600 seconds, to crawl from the 10 cm mark to the 65 cm mark.

Now, to calculate the speed, we divide the distance covered by the time taken. In this case, the speed of Sophy the snail is 55 cm / 600 s. To simplify, we can express the speed in cm/s by dividing both the numerator and denominator by 5: 11 cm / 120 s.

Thus, the speed of Sophy the snail is 11 cm/s.