Fall

True or False? Some insects - including the wooly bear caterpillar - can freeze in the fall and thaw out and keep living in the spring.

• True

• False

True of False? The black bear is NOT a true hibernator.

• True

• False

What is the velocity of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? (assume g is rounded to 10 m/s²)?. 

• 10, 20, 30, 40, 50 m/s

• 5, 10, 15, 20, 25 m/s

• 5, 20, 45, 80,125 m

• 10,10,10,10,10 m/s

What is the distance a ball falls after 1,2,3,4,5 seconds (assume g is rounded to 10 m/s²)?

• 10, 20, 30, 40, 50 m (meters)

• 5, 20, 45, 80,125 m (meters)

• 5, 10,15, 20, 25 m (meters)

• 10, 25, 60, 90,120 m (meters)

Tags

NGSS.MS-PS2-2

What is the acceleration of a ball that is dropped off the side of a cliff after 1,2,3,4,5 seconds? (assume g is rounded to 10 m/s²)

• 5,10,15, 20, 25 m/s²

• 10, 20, 30, 40, 50 m/s²

• 5, 20, 45, 80, 125 m/s²

• 10,10,10,10,10 m/s²

Tags

NGSS.MS-PS2-4

When an object falls in physics world, what happens?

• It accelerates at a constant rate until it hits the ground

• It accelerates at a non-constant rate until it hits the ground

• It accelerates at a constant rate until it reaches terminal velocity

• It accelerates at a non-constant rate until it reaches terminal velocity

Tags

NGSS.HS-PS2-1

Which of the following statements applies to the motion of a ball rising and then falling in free fall?
I. The ball has constant acceleration as it moves upward.
II. The ball has constant acceleration at the top of its path.

III. The ball has constant acceleration as it moves downward.

• I only

• III only

• I and III

• I, II, and III

Tags

NGSS.MS-PS2-4

What is the primary force acting on an object in free fall near the Earth's surface?

• Gravitational force

• Magnetic force

• Electromagnetic force

• Nuclear force

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following best describes terminal velocity?

• The constant speed reached by an object when the force of gravity is balanced by air resistance

• The initial speed of an object in free fall

• The speed at which an object stops accelerating

• The speed at which an object starts accelerating

What happens to the acceleration of an object in free fall when it reaches terminal velocity?

• It becomes zero

• It increases

• It decreases

• It remains constant

Tags

NGSS.HS-PS2-1