ঢাকা থেকে চট্টগ্রামের দূরত্ব ২৪০ কি. মি.। একটি বাস ঘণ্টায় ৬০ কি. মি. গতিতে গিয়ে ঘণ্টায় ৪০ কি. মি. গতিতে ফিরে এল। বাসটির গড় গতিবেগ কত?
A. ৪৮ কি. মি./ঘণ্টা
B. ৫০ কি. মি./ঘণ্টা
C. ৫২ কি. মি./ঘণ্টা
D. ৫৪ কি. মি./ঘণ্টা
সঠিক উত্তরঃ
A.
৪৮ কি. মি./ঘণ্টা
Explanation:
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