Physical Quantities and Units
Physics ⇒ Mechanics
Physical Quantities and Units starts at 6 and continues till grade 12.
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See sample questions for grade 11
Convert 3600 seconds to hours.
Express 250 cm in meters.
Express 5 kilometers in meters.
State the SI base units for length, mass, and time.
A box has a mass of 5 kg. What is its weight on Earth (g = 9.8 m/s2)?
A car travels 100 kilometers in 2 hours. What is its average speed in SI units?
A force of 10 N is applied to a mass of 2 kg. What is the acceleration produced?
A force of 20 N acts on a body and moves it 4 m in the direction of the force. Calculate the work done.
Which of the following is a derived quantity?
(1) Mass
(2) Length
(3) Time
(4) Velocity
Which of the following is a fundamental physical quantity?
(1) Force
(2) Length
(3) Velocity
(4) Energy
Which of the following is a scalar quantity?
(1) Displacement
(2) Velocity
(3) Speed
(4) Force
Which of the following is a vector quantity?
(1) Distance
(2) Speed
(3) Acceleration
(4) Work
Fill in the blank: 1 newton is equal to 1 ________ meter per second squared.
Fill in the blank: The SI unit of force is ________.
Fill in the blank: The SI unit of frequency is ________.
Fill in the blank: The SI unit of power is ________.
State whether the following statement is true or false: The SI unit of temperature is the degree Celsius.
True or False: The second is the SI unit of time.
True or False: The SI unit of density is kg/m3.
True or False: The unit 'dyne' is used in the CGS system for force.
