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प्रश्न
Moon or Cloud?
Observe the moon on a windy night with a fair bit of cloud cover in the sky. As the cloud passes in front of the moon you sometimes think it is the moon which is moving behind the cloud. What would you think if you were to observe a tree at the same time?
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उत्तर
Do it yourself.
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संबंधित प्रश्न
Give one example in the case where the force is of contact.
Give one example in the case where Force is at a distance.
Complete the following:
1 N = ............kgf (approx)
Which of the following is not the force at a distance:
(a) electrostatic force
(b) gravitational force
(c) frictional force.
(d) magnetic force.
Newton's second law of motion applicable in all condition is:
(a) `F = (Δp)/(Δt)`
(b) F = ma
(c) `F = M (Δv)/(Δt)`
(d) all three
Define contact forces.
Fill in the empty spaces
Can you give example for contact and non-contact forces?
Plotting a graph for momentum on the Y-axis and time on X-axis. the slope of the momentum-time graph gives
To produce a displacement ______ is required.
Two identical bullets are fired one by a light rifle and another by a heavy rifle with the same force. Which rifle will hurt the shoulder more and why?
