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प्रश्न
The force of friction always acts ______ the motion.
विकल्प
along
against
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उत्तर
The force of friction always acts against the motion.
संबंधित प्रश्न
Give one example in the case where the force is of contact.
A body of mass 1 kg is thrown vertically up with an initial speed of 5 m s-1. What is the magnitude and direction of force due to gravity acting on the body when it is at its highest point? Take G = 9.8 n kg-1
Define contact forces.
______ has to be applied to change the ______ of a ______ object.
(moving, direction, force)
A ball was set rolling on a large table. If its ______ is to be changed, a ______ will have to be applied on it.
Fill in the empty spaces
Can you give example for contact and non-contact forces?
A mechanic unscrew a nut by applying a force of 140 N with a spanner of length 40 cm. What should be the length of the spanner if a force of 40 N is applied to unscrew the same nut?
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?
Assertion: Force is defined as a push or pulls acting on a body.
Reason: CGS unit of force is the newton.
The moon attracts Earth with a force of 1020 N, and then the force with which the Earth attracts the moon is ______.
