Question

what does the odometer of an automobile measure ? which of the following is moving faster? justify your answer a) scooter moving with a speed of 300 M per minute b) a car moving with a speed of 36 km per hour

Answer 1

The speed of the car is greater than the scooter.

Explanation:

1. An odometer in an automobile is a device that measures the total distance traveled by a vehicle.
2. It measures the distance by calculating the circumference of the wheels.

Since the units of scooter and car are different they are not comparable. We will first convert the units to make them comparable.

the scooter moves- 300 m/min, converting it to m/sec

= 5m/sec

to convert m/s to km/hr, we multiply m/s by $\frac{18}{5}$ or $3.6$

therefore: the scooter speed is 18 km/hr

comparing it with car speed- 36 km/hr

clearly 36> 18

Hence, the speed of the car is greater than the speed of the scooter.

(#SPJ2)

Answer 2

Answer:

An odometer is an automobile device that measures the total distance travelled by a vehicle.

It measures the distance by calculating the circumference of wheel.

Since the units of scooter and car are different and not comparable. We will first convert the units to make them comparable.

1) speed = $\frac{totals}{totalt}=\frac{300}{60}=5m/s$

2) speed = $\frac{totals}{totalt}=36\times\frac{18}{5}=\frac{648}{5}=129.6m/s$

Clearly, $129.6m/s (car) > 5m/s (scooter)$

Hence, the speed of the car is greater than the speed of the scooter.

#SPJ2