To answer the question, the relationship between the height of the drop and the number of drops is needed. He repeatedly dropped a whelk from a fixed height until the whelk broke. He recorded the height and the number of drops required. He repeated this for several different heights. The dropping of whelk can be simulated by dropping peanuts or other objects.
Peanuts are a good choice because they are relatively inexpensive and fairly uniform.
If you do not wish to conduct an experiment to gather your own data, then use the sample data provided . Start with a height of 15 cm. Repeatedly drop a peanut until it breaks into two pieces. Record the number of drops needed for the peanut to break. Repeat this experiment for at least eight peanuts at this same height.