B. Answer the following questions.
1. Define mass and mention its Sl unit.
2. Define speed
3. How will you find the density of a solid object?
4. What is non-uniform motion?
5. When is a body said to be in motion?
Answers
Answer:
1) Mass is the amount of matter in an object. its SI unit is kilogram (Kg)
2) the rate at which someone or something moves
3) Figure out the volume, by either measuring the dimensions of a solid or using a measuring jug for a liquid. ...
Put the object or material on a scale and figure out its mass.
Divide the mass by the volume to figure out the density (p = m / v).
4) The type of motion in which the object travels with a varied speed is called Non-Uniform Motion. This means that the object does not cover the equal distance in equal time intervals.
5) A body is said to be in motion when its position continuously changes with respect to time.
Explanation:
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Answer:
1 ) Mass is the quantity of matter in a body regardless of its volume or any forces acting on it. SI Unit of Mass is Kilogram(Kg) and the CGS unit is gram(g).
2 ) Speed is a way of measuring how quickly something is moving or being done, or something moving fast.
3 ) i) Figure out the volume, by either measuring the dimensions of a solid or using a measuring jug for a liquid. Convert any units as needed to get a number in meters cubed.
ii) Put the object or material on a scale and figure out its mass.
iii) Divide the mass by the volume to figure out the density (p = m / v).
4 ) The motion of an object in which the object travels with varied speed and it does not cover same distance in equal time intervals, irrespective of the time interval duration.
5 ) A body is said to be in motion when its position continuously changes with respect to time.
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