A rocket is sent straight upward by a constant force from its engines. The launch details are given below: - weight of rocket: $1.9\,\text{MN}$ - average air resistance: $0.10\,\text{MN}$ - force from engine: $3.5\,\text{MN}$ What proportion of the work done on the rocket is converted into an increase in speed over the first $100\,\text{m}$?
- A$150\,\text{MJ}$
- B$170\,\text{MJ}$
- C$350\,\text{MJ}$
- D$550\,\text{MJ}$