A scientific probe is dropped from an atmospheric balloon on Titan at a height of 6300 m6300\text{ m}6300 m. The probe reaches the surface of Titan after 1400 s1400\text{ s}1400 s.
Calculate the average speed of the probe as it descends.
Use the equation: distance travelled=average speed×time\text{distance travelled} = \text{average speed} \times \text{time}distance travelled=average speed×time
Average speed = ____________ m/s\text{m/s}m/s
A scientist draws a free-body force diagram for the scientific probe as it descends:
(i) Label or name the two forces represented by the arrows acting on the probe.
(ii) Explain the motion of the probe as it descends.
A heavy cargo shuttle on Titan has a mass of 45 000 kg45\,000\text{ kg}45000 kg.
Calculate the force needed to accelerate this shuttle at 1.8 m/s21.8\text{ m/s}^21.8 m/s2.
Use the equation: force=mass×acceleration\text{force} = \text{mass} \times \text{acceleration}force=mass×acceleration
Force = ____________ N\text{N}N