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Matter In Our Surroundings

Question
CBSEENSC9006319
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A body of mass 10 kg is displaced through a distance of 2 m under an acceleration of 5 m/s2. Calculate the work done.

Solution

Given,

Mass of the body, m - 10 kg

Acceleration, a = 5 m/s2

Displacement, s = 2 m

Therefore,

Work done, W = Fs 

Force on the body, F = ma 

                                 10×5 = 50 N
Therefore,

Work done is given by, W = 50 x 2 J

                                      = 100 J.

Some More Questions From Matter In Our Surroundings Chapter

What is the physical state of water at

a) 25°C
b)00C
c)1000C

What is the physical state of water at
0°C

What is the physical state of water at
100°C

Give two reasons to justify
Water at room temperature is a liquid.

Give two reasons to justify
An iron almirah is a solid at room temperature.

Why is ice at 273K more effective in cooling than water at the same temperature ?

What produces more severe burns, boiling water or steam ?

8. Name A, B, C, D, E and F in the following diagram showing state change :

Both boiling and evaporation convert a liquid into vapour. What is the difference between the two process

Define Evaporation

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