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25.10.2020 •
Mathematics
A parachutist's speed during a free fall reaches 189 kilometers per hour. What is this speed in meters per second? At this speed, how many meters will the parachutist fall during 15 seconds of free fall? Do not round your answers.
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Ответ:
Speed of the parachutist = 189 km/h
To Find:The speed in m/s .
Formula:km/h × 5/18 = m/s
In Case I:189 km/h × 5/18 = 52.5 m/s
In Case II:Time Given: 15 seconds
Distance = Speed × Time
Distance = 52.5 × 15 = 787.5 metres
In Case I:The speed is 52.5 m/s .
In Case II:The parachutist will fall 787.5 metres during 15 seconds of free fall with that speed.
Ответ:
the answer is 3.05 ft. 5 stars plz