A person pulls (accelerates) cart across the road. If the person pulls the cart

Question

A person pulls (accelerates) cart across the road.

If the person pulls the cart to the right, what is expected by Newton's third law? (Write the number of the correct answer number.)

i) The cart pulls the person to the right.

ii) The cart pushes the person down towards the ground.

iii) The cart pulls the person to the left.

iv) The cart does not exert any force on the person.

How come the forces do not cancel each other out? (Write the number of the correct answer number.)

i)They do cancel each other.

ii) They act on different objects.

iii) They are not real forces.

Explanation / Answer

1st part the person is pulling the cart to the left
so he will feel a force towards left by the cart
by newton's 3rd law
action-person is pulling
reaction-cart is pulling with equal force
but in opposite direction

2)

the action force is acting on the cart
but the reaction force is acting on the person
they are equal and opposite
but they will not cancel out each other
as they are acting on different bodies

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