Speed of object is 80 km/hr
Step-by-step explanation:
- Step 1: Formula for Speed = Distance/Time
Given Distance = 120 km and Time = 90 min
- Step 2: Convert given data into SI units.
Time = 90 min = 90/60 hours = 3/2 = 1.5 hours
- Step 3: Substitute in the formula
Speed = 120 km /1.5 hrs
= 1200/15 = 80 km/hr
