CUIUC
2. The odometer of a car reads 67931.0 km when the clock shows the time 8.30 PMW
is the distance moved by the car if at 10.10 PM, the odometer reading has changed to
70962.0 km?
(a) Calculate the speed of the car in km/min during this time.
(b) Express the speed in km/h also.
Answers
Explanation:
The initial reading of the odometer of the car =67321.0 km
The final reading of the odometer of the car = 70962.0 km
The car starts at 8:30 AM and stops at 8:50 AM.
Distance covered by car = (57336 - 57321) km = 15 km
Time taken between 08:30 AM to 08:50 AM = 20 minutes = 20/60 hour = 1/3 hour
So Speed in km/min
Speed = (Distance travelled)/ (Time)
= (15km)/ (20min)
= 0.75km/min
Speed in km/h Speed = (Distance travelled)/ (Time)
= (15km)/ (1/3h)
= (15 x 3) km/ (1h)
= 45km/h
Explanation:
Ohm's Law is a formula used to calculate the relationship between voltage, current and resistance in an electrical circuit. To students of electronics, Ohm's Law (E = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists. E = I x R