Jawaban:

nomor 3 dan 4

Distance = velocity x time = 90 km/hour x 2 hours = 180 km

Time = distance / velocity = 800 km / 400 km/hour = 2 hours

2. To find the velocity of the car, we need to divide the distance traveled by the time it took to travel that distance.

Car velocity in km/hour = 120 km / 2 hours = 60 km/hour

To convert km/hour to m/s, we multiply the result by 1000/3600,

Car velocity in m/s = 60 km/hour * 1000/3600 m/s = 16.67 m/s

5. a. In 1 hour, the car would travel 20 * 60 * 60 = 72,000 meters

b. In 90 minutes, the car would travel 20 * 60 * (90/60) = 18,000 meters.

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