A car starts from school gaining a speed at the rate of 2 km/min/sec. how long will it take to nave a speed of 50 km/min?
50km/min / (2 km/min /s) = 25s
car starts from school gaining a speed at the rate of 2 km./min./sec. How long will it take to nave a speed of 50 km/min?
To find out how long it will take for the car to reach a speed of 50 km/min, we can use the formula for acceleration:
acceleration = change in speed / time
In this case, the change in speed is the final speed of 50 km/min minus the initial speed of 0 km/min. The time is what we need to find, so we can rearrange the formula to solve for time:
time = change in speed / acceleration
First, we need to convert the rate of change in speed from 2 km/min/sec to km/min. Since there are 60 seconds in a minute, we can multiply the rate by 60:
2 km/min/sec * 60 sec/min = 120 km/min
Now we can substitute the values into the formula:
time = (50 km/min - 0 km/min) / 120 km/min
Simplifying the equation:
time = 50 km/min / 120 km/min
Dividing the numerator by the denominator:
time ≈ 0.42 min
Therefore, it will take approximately 0.42 minutes for the car to reach a speed of 50 km/min.