Question

What is an odometer?
5. Define the speed.
B. Fill in the blanks :
1. The instrument is used to mea
2. The standard unit of speed is
3. The graph of distance time is a straight
4. Time period is increased on
5. Crystals of the substance in the watches​

Answer 1

Answer:

An odometer is a device that is used for measuring the distance traveled by a vehicle.

Speed is a scalar quantity that refers to "how fast an object is moving."

Answer 2

An odometer is a device that is used for measuring the distance traveled by a vehicle.

5) Speed is a scalar quantity that refers to "how fast an object is moving." 

B

2) The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour.

3) Straight lines' on a distance-time graph tell us that the object is travelling at a constant speed.

4)

5)Quartz crystals maintain a precise frequency standard, which helps to regulate the movement of a watch or clock, thus making the timepieces very accurate.