Question

81. The boy is pulling a cart by a force of 100 N. The
frictional force experienced by the cart is 20 N.
The force causing the motion of the cart is
(a) 100 N
(b) 120 N
(c) 80 N
(d) 5 N


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Answer 1

The answer is 80Newton

Answer 2

(c) 80 Newton is the correct answer