Final answer:
To travel a distance of 70,000 m at a speed of 25 m/s, it will take 2800 seconds. The time to get back is also 2800 seconds. The total time for the trip there and back is 5600 seconds.
Step-by-step explanation:
To calculate the time it takes to travel a certain distance, you can use the formula t = d/v, where t is the time, d is the distance, and v is the velocity or speed. In this case, the distance is 70,000 m and the speed is 25 m/s. So, using the formula, we have:
t = 70000/25 = 2800 seconds
To calculate the time it takes to get back, we can use the same formula, but since the velocity for the return trip is negative, we can consider the speed as -25 m/s. So, the calculation becomes:
t = 70000/(-25) = -2800 seconds
To find the total time for the trip there and back, we can add the absolute values of the times for the two trips:
Total time = |2800| + |-2800| = 5600 seconds