Understanding Freefall and Kinematic Equations

What is the definition of an object in freefall?

• An object moving upwards with constant speed

• An object with no forces acting on it

• An object with only gravity acting on it

• An object moving horizontally with constant speed

What is the value of acceleration due to gravity on Earth?

• 9.81 m/s²

• 8.9 m/s²

• 10.5 m/s²

• 12 m/s²

How does the direction of acceleration compare to the direction of velocity during freefall?

• Acceleration and velocity always point in the same direction

• Velocity is always zero during freefall

• Acceleration always points downwards, regardless of velocity direction

• Acceleration changes direction with velocity

What happens to the velocity of an object at the highest point of its motion when thrown upwards?

• It is at its maximum

• It is zero

• It is negative

• It is equal to the initial velocity

If an object is dropped, what is its initial velocity?

• 10 m/s

• 9.81 m/s

• 0 m/s

• 5 m/s

In the example of a ball dropped from a height, what is the final velocity just before it hits the ground?

• 14 m/s

• 10 m/s

• 9.81 m/s

• 0 m/s

When a ball is thrown upwards, what is the maximum height it reaches if thrown at 10 m/s?

• 10.2 meters

• 5.1 meters

• 7.5 meters

• 12 meters

How long does it take for a ball thrown upwards at 10 m/s to reach its maximum height?

• 3 seconds

• 1.02 seconds

• 2.5 seconds

• 0.5 seconds

In a multi-step problem, what is the total time a ball is in the air if thrown off a cliff at 20 m/s?

• 6.2 seconds

• 7 seconds

• 4.5 seconds

• 5.82 seconds

What is the displacement of a ball thrown off a cliff at 20 m/s when it reaches the ground?

• 20.4 meters

• 50 meters

• 70.4 meters

• 100 meters