Free Fall Kinematics Quiz

What is the initial velocity of the object projected straight up in the problem discussed?

• 20 m/s

• 15 m/s

• 25 m/s

• 10 m/s

Which kinematic variable is NOT explicitly given in the problem?

• Change in position

• Final velocity

• Acceleration

• Initial velocity

In the first method, what is the final velocity of the object at the top of its path?

• 15 m/s

• 0 m/s

• -15 m/s

• 9.81 m/s

How is the total time in the air calculated in the first method?

• By dividing the time to go up by two

• By subtracting the time to come down from the time to go up

• By multiplying the time to go up by two

• By adding the time to go up and the time to come down

In the second method, what is the final velocity of the object when it returns to the starting point?

• -15 m/s

• 0 m/s

• 15 m/s

• 9.81 m/s

What is the total time the object is in the air according to both methods?

• 1.53 seconds

• 2.06 seconds

• 3.06 seconds

• 4.06 seconds

Which kinematic equation is used to solve for time in this problem?

• Equation with time and change in position

• Equation with time and final velocity

• Equation with time and initial velocity

• Equation with time and acceleration

What is the acceleration due to gravity used in the problem?

• -9.81 m/s²

• 9.81 m/s²

• -15 m/s²

• 15 m/s²

Why is the time calculated in both methods the same?

• Because the initial velocity is the same

• Because the acceleration is constant

• Because the object returns to the same height

• Because the methods are equivalent

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