2D Motion Review

Front

What is the horizontal component of velocity in 2D motion?

Back

The horizontal component of velocity is the velocity of an object in the horizontal direction, often denoted as v_x.

Front

How do you resolve a vector?

Back

To resolve a vector means to find its x and y components.

Front

What is the vertical component of a person walking 12 m across a room?

Back

0 m, since there is no vertical movement.

Front

What is the only force acting on a projectile after it is launched?

Back

Gravity is the only force acting on a projectile after launch.

Front

What is the initial vertical velocity (v_iy) for a horizontal launch?

Back

0 m/s, as there is no initial vertical motion.

Front

Define projectile motion.

Back

Projectile motion is the motion of an object thrown into the air, subject to only the force of gravity.

Front

What is the formula for calculating the range of a projectile?

Back

Range = (v^2 * sin(2θ)) / g, where v is the initial velocity, θ is the launch angle, and g is the acceleration due to gravity.

Front

What does the term 'resultant vector' mean?

Back

The resultant vector is the vector that results from adding two or more vectors together.

Front

What is the significance of the launch angle in projectile motion?

Back

The launch angle determines the trajectory and range of the projectile.

Front

Explain the concept of air resistance in 2D motion.

Back

Air resistance is a force that opposes the motion of an object through the air, affecting its velocity and trajectory.