Free Fall

What is the acceleration due to gravity on Earth?

• -9.81 m/s²

• 5.67 m/s²

• 7.32 m/s²

• 9.81 m/s²

Who conducted the famous experiment from the Leaning Tower of Pisa to demonstrate that objects fall at the same rate regardless of their mass?

• Albert Einstein

• Isaac Newton

• Nikola Tesla

• Galileo Galilei

What is the unit of measurement for acceleration due to gravity?

• kg

• mph

• m/s²

• m/s

What did Aristotle think about falling objects?

• Aristotle believed that all objects fall at the same speed, regardless of their mass.

• Aristotle believed that the speed of a falling object is proportional to its mass.

• Aristotle believed that heavier objects fall faster than lighter objects.

• Aristotle believed that the speed of a falling object is determined by the air resistance it encounters.

What is the relationship between mass and acceleration in free fall?

• The acceleration decreases as the mass of the object increases

• The acceleration increases as the mass of the object increases

• The relationship between mass and acceleration in free fall is that the acceleration is constant and independent of the mass of the object.

• The acceleration is directly proportional to the mass of the object

What is the symbol used to represent acceleration due to gravity?

• t

• a

• m

• g

How does air resistance affect free fall acceleration?

• Air resistance decreases the acceleration of an object in free fall.

• Air resistance increases the acceleration of an object in free fall.

• Air resistance has no effect on the acceleration of an object in free fall.

• Air resistance causes the object to stop in free fall.

An object falls from a high building. Ignoring air resistance, what will its speed be after 8 seconds of falling?

• 0 m/s.

• 78.4 m/s

• 1.27 m/s

• 313.6 m/s

An object falls from a high building and hits the ground in 7 s. Ignoring air resistance, what is the distance that it fell?

• 1.19 m

• 240.1 m

• 9.8 m

• 68.6 m

During a tornado a hotel suffered damage. Suppose a piece of glass dropped near the top of the hotel falling 306 meters. Ignoring air resistance, how long would it take the piece of glass to hit the ground?

• 3.8 seconds

• 62.4 seconds

• 12.5 seconds

• 7.9 seconds