1.4 notes check

How is the motion of objects described in different inertial reference frames?

• It remains the same in all frames

• It varies depending on the observer's frame

• It is always faster in moving frames

• It is slower in stationary frames

What is the acceleration of an object in free fall toward the ground?

• 9.8 m/s²

• 10 m/s²

• 5 m/s²

• 15 m/s²

What does "free fall" mean in terms of forces acting on an object?

• Only gravitational force acts on the object

• No forces act on the object

• Air resistance acts on the object

• Friction acts on the object

What is the definition of mass?

• The force exerted by an object

• The amount of matter in an object

• The volume of an object

• The density of an object

According to the image, how do objects accelerate regardless of their mass?

• Objects accelerate at different rates depending on their mass

• Objects accelerate at g regardless of mass

• Objects do not accelerate in a vacuum

• Objects accelerate faster if they are heavier

What does the statement "Objects accelerate at g regardless of mass" imply?

• Heavier objects fall faster than lighter ones

• All objects fall at the same rate in a vacuum

• Lighter objects fall faster than heavier ones

• Objects do not fall in a vacuum

At what point does an object in free fall reach a vertical velocity of zero?

• When it hits the ground

• At its maximum height

• When it is launched

• Halfway through its fall

At the highest point of its trajectory, what is the velocity of the ball?

• 9.8 m/s

• 0 m/s

• -9.8 m/s

• 19.6 m/s

What happens to the speed and velocity of the ball during its ascent?

• Speed increases, velocity becomes more positive

• Speed decreases, velocity becomes less positive

• Speed remains constant, velocity becomes more negative

• Speed decreases, velocity becomes more positive

What is the velocity of the ball at t = 2 seconds?

• -9.8 m/s

• -19.6 m/s

• 0 m/s

• 9.8 m/s