Physics Questions?

Question

1. Which of Newton’s laws covers the concept of inertia?
2. What kind of force prevents Newton’s First Law from appearing to be true in our daily lives? If an object is moving to the left, in which direction does this kind of force point?
3. Inertia is directly related to which quality of an object?
4. Say you have two weights: a 1 kg weight and a 2 kg weight. You throw the 1 kg weight, and then you throw the 2kg weight twice as hard (with twice the force). Which weight has more acceleration as you throw them?

Answer 1

1) Newton's First Law

Definition:

sometimes referred to as the law of inertia. Newton's first law of motion is often stated as. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

2) Friction and drag forces prevent objects to remain in motion.

The force of friction/drag will point to the right. This will eventually cause the object to come to a stopping point.

3) Resistance to motion

4)

F-1*g = 1 * a

a = (F-1*g)/1 = F-1*g

2F-2*g = 2*a

a = (2F-2*g)/2 = F-1*g

∴ Same acceleration