An experimental aerospace capsule has a mass of 740 kg.
During a drop test, the capsule strikes a pressurized deceleration cushion with a downward velocity of 16 m/s and is brought to a complete stop.
The average vertical deceleration force exerted by the cushion on the capsule is 3.5 × 104 N.
Calculate the time taken for the capsule to be brought to rest.
Give your answer to an appropriate number of significant figures.
Use the equation:
force=change in momentumtime \text{force} = \frac{\text{change in momentum}}{\text{time}} force=timechange in momentum