Final answer:
Using Newton's second law, the dancer's vertical acceleration is calculated as 16.24 m/s² when subjected to a vertical force of 1218N on their mass of 75kg.
Step-by-step explanation:
To calculate the vertical acceleration of a 75kg dancer when the sum of the vertical forces acting on them is 1218N, you can use Newton's second law, which states that force equals mass times acceleration (F = m*a). To find the acceleration, you can rearrange the formula to a = F/m.
Firstly, calculate the vertical acceleration (a):
- a = FV / m
- a = 1218N / 75kg
- a = 16.24 m/s²
Thus, the dancer's vertical acceleration is 16.24 m/s².