Calculating Average Speed in km/hr and m/s

Given:
The odometer of a car reads 4000 km at the start of a trip and 4600 km at the end of a trip. The trip took 1 hr.

To Find:
a) Average speed in km/hr
b) Average speed in m/s

Solution:
The formula to calculate average speed is given as:

Average speed = Total distance traveled / Total time taken

Let's calculate the total distance traveled by the car during the trip.

Total distance traveled = End reading of odometer - Start reading of odometer
= 4600 km - 4000 km
= 600 km

We are given that the trip took 1 hr, so the total time taken is 1 hr.

a) Average speed in km/hr:

Substituting the values in the formula, we get

Average speed = Total distance traveled / Total time taken
= 600 km / 1 hr
= 600 km/hr

Therefore, the average speed of the car during the trip is 600 km/hr.

b) Average speed in m/s:

To convert km/hr to m/s, we need to multiply the km/hr value by 1000/3600.

Average speed in m/s = (Average speed in km/hr) x (1000/3600)
= 600 km/hr x (1000/3600)
= 166.67 m/s

Therefore, the average speed of the car during the trip is 166.67 m/s.

Explanation:
The problem involves calculating the average speed of a car during a trip. We use the formula of average speed, which is the total distance traveled divided by the total time taken. We are given the start and end readings of the odometer, which help us calculate the total distance traveled by the car. We are also given the time taken for the trip. Substituting the values in the formula, we calculate the average speed of the car. To convert the average speed from km/hr to m/s, we multiply the value by 1000/3600.

Distance traveled by car = (4600 – 4000)= 600km
time taken to cover the distance = 1 hr

av. speed = distance travelled / total time
av. speed = 600 km / 1hr
av. speed = 600 km/hr

To convert km/hr into m/s, multiply 5/18 to the given answer.
av. speed = 600 x 5/18 m/s = 166.67 m/s