Newton’s first law of motion was a giant leap forward in scientific thought during newton’s time. even today, the idea is sometimes difficult at first for people to understand.

which statement is the best example of an object and motion that would make it hard for people to believe newton’s first law?

a rolling ball eventually slows down and comes to a stop.

a wagon must be pushed before it begins to move.

the heavier the load in a cart, the harder the cart is to turn.

a box does not move when pushed equally from opposite sides.

A rolling ball eventually slows down and comes to a stop.

Explanation:

Newton's first law of motion is also known as law of inertia. It states that an object remains in the state of rest or motion unless and until applied by an unbalanced force.

Common examples are: in order to move a wagon, it needs to be pushed that is a force must be applied. Heavier the load in cart has greater inertia and hence requires more force is required to turn the cart. A box does not move when pushed equally from opposite sides as balanced forces are acting.

It is hard for people to believe the application of Newton's first law in following example:

A rolling ball eventually slows down and comes to a stop.  This is because, force of friction acts in the opposite direction of motion of ball which eventually slows down the ball and stops it. Thus, here also a force is responsible to change the state of motion.

The correct statement that describes Newton's first law is "a rolling ball eventually slows down and comes to a stop".

Explanation :

Newton's first law states that an object at rest will remain at rest or an object in motion will remain in motion until an external force unbalanced force act on it.  

Out of the given options, the statement that describes Newton's first law is (A) " A rolling ball eventually slows down and comes to a stop ". In this case, the ball eventually slows down. This shows that frictional force is also acting in the opposite direction which is responsible to change its motion.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

c) up is the direction the magnetic force is acting on the charge.