GK
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
You drive 6.0 km at 50 km/h and then another 6.0 km at 90 km/h. Your average speed over the 12 km drive will be
|
|
greater than 70 km/h.
|
|
|
equal to 70 km/h.
|
|
|
less than 70 km/h.
|
|
|
exactly 38 km/h.
|
Explanation:
Detailed explanation-1: -So, average speed is less than 70 km/hr.
Detailed explanation-2: -The average speed for the entire travel is calculated as follows. Therefore, the average speed for the 12.0 km drive is 64.3 km/h.
Detailed explanation-3: -Answer. Answer: Average Speed =Total Distance Travelled/Total Time Taken = 300/10 = 30 km/hr.
There is 1 question to complete.