Final answer:
To calculate travel time for a car over 100 meters, the car's speed must be known; without it, the time cannot be determined. For the rabbit moving at 10 km/h, its speed is equivalent to approximately 2.78 m/s after conversion. These problems utilize the basic distance, speed, and time relationship.
Step-by-step explanation:
To determine how long it will take for a car to travel 100 meters, we need to know the speed at which the car is traveling. Without the speed, we cannot calculate the time. For example, if the car travels at 20 meters per second (m/s), it would take 5 seconds to travel 100 meters, since time is distance divided by speed (100 m / 20 m/s = 5 s).
In the case of the rabbit moving at 10 kilometers per hour (km/h), we can convert this speed to meters per second by multiplying by the conversion factor (10 km/h * (1000 m/1 km) (1 h/3600 s)). So the rabbit's speed in meters per second is approximately 2.78 m/s.
Therefore, to solve these types of problems, we apply the basic physics formula distance = speed × time, where each quantity must be in consistent units to obtain a correct calculation.