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Subject :NSO    Class : Class 7

When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by ________.

(A) The cart on the horse

(B) The ground on the horse

(C) The ground on the cart

(D) The horse on the ground
can the options a , b, c be true . as for me I don't think the ground can be on top of an horse right (b) please could you tell the right answer

Ans 1:

Class : Class 7
As ground apply frictional force on the horse. As it is not easy to run on rough area as compared to smooth area because smooth area apply less frictional force.

Ans 2:

Class : Class 8

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