Kinematics Part 2: Vertical Motion

The video tutorial explains vertical motion, focusing on the role of gravity as a constant acceleration of -9.8 m/s² on Earth. It covers the kinematic equations used to calculate time and velocity for objects in freefall and those with initial upward velocity. Two examples are provided: one where a rock is dropped from a cliff and another where a rock is thrown upwards. The tutorial emphasizes the importance of sign conventions in calculations and concludes with a comprehension check.

What is the constant acceleration due to Earth's gravity used in vertical motion calculations?

• 9.8 meters per second squared

• -9.8 meters per second squared

• 0 meters per second squared

• 9.8 meters per second

In the freefall example, what is the initial velocity of the rock when it is dropped?

• 5 meters per second

• 0 meters per second

• -9.8 meters per second

• 10 meters per second

How long does it take for the rock to hit the ground in the freefall example?

• 3.5 seconds

• 4.5 seconds

• 5.5 seconds

• 6.5 seconds

When a rock is thrown upwards, what happens to its velocity immediately after it leaves the hand?

• It becomes zero

• It decreases

• It remains constant

• It increases

What equation is used to solve for time when both t and t squared terms are present?

• Linear equation

• Logarithmic equation

• Quadratic equation

• Exponential equation

How long does it take for the rock thrown upwards to hit the ground?

• 4.65 seconds

• 7.65 seconds

• 5.65 seconds

• 6.65 seconds

What is the main difference between vertical and horizontal motion?

• Initial velocity

• Constant acceleration due to gravity

• Type of equations used

• Direction of motion