Exploring Motion Under Gravity in Two Dimensions

The video tutorial explores motion in two dimensions, focusing on how gravity affects vertical velocity while leaving horizontal velocity unchanged. It explains vector components, their independence, and how they relate to projectile motion. The tutorial also covers the graphical representation of velocity components, emphasizing the constant horizontal velocity and the changing vertical velocity due to gravity.

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

• 11.81 m/s²

• 10.81 m/s²

• 8.91 m/s²

• 9.81 m/s²

Which component of velocity does gravity affect?

• Horizontal velocity

• Both horizontal and vertical velocity

• Neither horizontal nor vertical velocity

• Vertical velocity

What does it mean when we say velocity is a vector?

• It has neither magnitude nor direction

• It has both magnitude and direction

• It has only direction

• It has only magnitude

How do you add two velocity vectors?

• By adding their magnitudes

• By adding their directions

• By adding their individual components

• By subtracting their magnitudes

What happens to the horizontal component of velocity in projectile motion?

• It decreases over time

• It increases over time

• It fluctuates randomly

• It remains constant

What is the shape of the path of a projectile?

• Linear

• Elliptical

• Circular

• Parabolic

What happens to the vertical component of velocity as a projectile moves upwards?

• It remains constant

• It increases

• It decreases

• It fluctuates

At the peak of its trajectory, what is the vertical velocity of a projectile?

• Constant

• Zero

• Maximum negative

• Maximum positive

What is the acceleration in the horizontal direction for a projectile?

• 9.81 m/s²

• 0 m/s²

• 4.9 m/s²

• 1.62 m/s²

How should the X and Y components of velocity be treated in projectile motion?

• Interchangeably

• Independently

• Dependently

• Simultaneously