Question 1

According to Galileo's experiments, what happens when two objects of different weights are dropped from the same height in the absence of air resistance?

Accepted Answer

Both objects fall at the same rate and hit the ground simultaneously.

Question 2

Which of the following best describes inertia?

Accepted Answer

The property of matter to resist changes in its motion.

Question 3

A crate is pushed across a floor at a constant velocity. Which statement is true about the forces acting on the crate?

Accepted Answer

The applied force is equal to the friction force.

Question 4

Which equation represents the equilibrium rule for forces acting on a non-accelerating object?

Accepted Answer

$$\sum F = 0$$

Question 5

A skydiver reaches terminal velocity during free fall. What does this mean in terms of forces?

Accepted Answer

The force of gravity is equal to air resistance.

Question 6

Which of the following statements is consistent with Newton's First Law of Motion?

Accepted Answer

An object at rest remains at rest, and an object in motion remains in motion unless acted upon by a nonzero net force.

Question 7

A hockey puck slides across ice at a constant speed. What type of equilibrium is it in?

Accepted Answer

Dynamic equilibrium

Question 8

If the net force acting on an object is zero, which of the following must be true?

Accepted Answer

The object is at rest or moving at a constant velocity.

Question 9

Which SI unit is used to measure force?

Accepted Answer

Newton (N)

Question 10

A ball is rolled up an incline and then allowed to roll back down. According to Galileo, what will happen to the ball if there is no friction?

Accepted Answer

It will roll back down and reach its original height.

Question 11

Which of the following is an example of static equilibrium?

Accepted Answer

A book resting on a table.

Question 12

A person tosses a coin straight up while riding in a train moving at constant velocity. Where does the coin land relative to the person?

Accepted Answer

Back in the person's hand.

Question 13

Which of the following best describes the concept of net force?

Accepted Answer

The sum of all individual forces acting on an object.

Question 14

If a box is at rest on a table, which force balances the force of gravity?

Accepted Answer

Support (normal) force

Question 15

Which of the following statements about horizontal motion is correct according to Galileo?

Accepted Answer

Horizontal motion continues at constant speed unless acted upon by a force.

Question 16

A crate is pushed at a steady speed across a rough floor. Which statement is true about the equilibrium of the crate?

Accepted Answer

It is in dynamic equilibrium.

Question 17

Which of the following is NOT a correct statement about Aristotle's ideas of motion?

Accepted Answer

Objects in motion remain in motion unless acted upon by a force.

Question 18

A 5 N force is applied to the right and a 5 N force is applied to the left on an object. What is the net force acting on the object?

Accepted Answer

$$0\ \mathrm{N}$$

Question 19

Which scenario best illustrates Newton's First Law in a real-world context?

Accepted Answer

A soccer ball remains at rest until kicked.

Question 20

A moving train tosses a basketball straight up. To an observer standing outside the train, what path does the ball follow?

Accepted Answer

A parabolic path.

Newton's First Law of Motion: Inertia, Forces, and Historical Foundations

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