Advertisements
Advertisements
Question
Express 15 m s-1 in km h-1.
Advertisements
Solution
1 metre = `1/1000` km
15 metre = `15/1000` km
1 second = `1/3600` hr
Here , Distance = `15/1000` km
Time taken = `1/3600` hr .
Speed = `"Distance"/ "Time taken" `
= `(15/1000)/(1/3600)`
= `15/1000 × 3600/1`
= 54 km `"h"^-1`
APPEARS IN
RELATED QUESTIONS
Fill in the blank:
1 metric tonne = .............
What is measurement? How is a measurement expressed?
Name the S.I. unit.
State if the following statement is true or false. Correct the statement if it is false.
The error in reading a scale due to the wrong positioning of the eye is called human error.
State if the following statement is true or false. Correct the statement if it is false.
The average of a group of observations is calculated by adding all the observations and dividing the sum by the number of observations.
State if the following statement is true or false. Correct the statement if it is false.
1 m = 10,000 cm3
Solve the following numerical problem.
A piece of wire is wound around a pencil 60 times. If the total width of all the turns is 4 cm, find the diameter of the wire.
Explain giving examples.
Vector quantity
What is the fundamental quantity? Give examples.
What are the multiples and sub multiples of mass?
