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Chapter 3: Problem 49

Odometer is used to find the distance travelled by the vehicle and speedometer is used to find the speed of the vehicle.

Short Answer

Expert verified
Answer: The primary difference between an odometer and a speedometer in a vehicle is that an odometer measures the total distance travelled by the vehicle, while a speedometer measures the vehicle's current speed.

Step by step solution

01

Odometer: Concept and Function

An odometer is an instrument used to measure the distance travelled by a vehicle, such as a car, bicycle, or any other kind of moving vehicle. It usually displays the total distance travelled in the form of a digital or mechanical counter (in kilometers or miles). The odometer calculates the distance travelled by counting the number of rotations the wheels make and multiplying the result by the circumference of the wheels.
02

Speedometer: Concept and Function

A speedometer is an instrument that measures the speed at which a vehicle is travelling. It is usually displayed as a dial with a needle or a digital readout (in kilometers per hour or miles per hour). The speedometer works by measuring the rotational speed of the vehicle's wheels and converting it to linear speed, taking into account the wheel and tire size.
03

Using Odometer to Find Distance Travelled

To find the distance travelled by the vehicle, simply look at the reading on the odometer. This reading will give the total distance that the vehicle has travelled since it was first used or since the odometer was last reset. If you want to find the distance travelled during a specific trip, record the odometer reading at the beginning of the trip and again at the end of the trip. The difference between these two readings is the distance travelled during that particular trip.
04

Using Speedometer to Find Speed of the Vehicle

To find the current speed of the vehicle, observe the reading on the speedometer while the vehicle is in motion. The speedometer display (either a dial and needle or a digital readout) will show the vehicle's current speed in kilometers per hour (km/h) or miles per hour (mph), depending on the country or region. Keep in mind that speed may change constantly due to road conditions, traffic, or changes in acceleration, so the speedometer must be monitored throughout the journey to ensure accurate measurements.

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Most popular questions from this chapter

A simple pendulum that has time period of \(2 \mathrm{~s}\) is called seconds pendulum. Its length is approximately \(100 \mathrm{~cm}\) or \(1 \mathrm{~m} .\)

(i) The unit of speed and velocity is \(\mathrm{m} \mathrm{s}^{-1}\). (ii) If a body is moving in a straight line path then its speed is equal to velocity \(50 \mathrm{~m} \mathrm{~s}^{-1}=50 \times \frac{18}{5} \mathrm{~km} \mathrm{~h}^{-1}=180 \mathrm{~km} \mathrm{~h}^{-1}\)

Motion along a straight line. (a) The motion of coin on a carrom board. (b) The motion of air bus in straight line. Circular motion \(\quad\) (a) Earth revolving around the sun. (b) Potter's wheel. Periodic motion \(\quad\) (a) The swinging pendulum of a wall clock. (b) Halley commet visits earth at regular periods.

The average distance per unit time, when the body is moving with variable speed, is called average speed, Average speed \(=\frac{\text { Total distance travelled }}{\text { Total time taken }}\)

Fill in the Blanks. \(5 \mathrm{~m} \mathrm{~s}^{-2}\) \(\mathrm{a}=\frac{\mathrm{v}-\mathrm{u}}{\mathrm{t}}=\frac{20-10}{2}=5 \mathrm{~m} \mathrm{~s}^{-2}\)
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