Jane's car accelerates 5km/h every second. If her speed now is 30 km/h, what is her speed after 10 seconds? Would you start with 35km/h as the first speed or 30km/h as the first speed?

Pls explain clearly why thats the case.

what does "now" mean to you?

To determine Jane's speed after 10 seconds, we need to consider her initial speed and the rate at which her speed is changing.

Based on the given information, Jane's car accelerates by 5 km/h every second. Therefore, her speed increases by 5 km/h per second.

If her current speed is 30 km/h, we can consider this as her initial speed. From there, we can calculate her speed after 10 seconds.

First, we need to determine the total increase in speed after 10 seconds. Since the speed increases by 5 km/h per second for 10 seconds, we multiply the acceleration rate (5 km/h per second) by the time (10 seconds):

5 km/h * 10 seconds = 50 km/h

Next, we add the total increase in speed to her initial speed:

30 km/h (initial speed) + 50 km/h (total increase in speed) = 80 km/h

Therefore, after 10 seconds, Jane's speed will be 80 km/h.

In summary, we start with 30 km/h as the initial speed, and after 10 seconds, her speed will be 80 km/h.