Honors Physics Flashcard 1: Modeling Motion

Front

What happens to the velocity vector of an object moving along a curved path?

Back

The direction of the velocity vector is constantly changing.

Front

Equation representing horizontal displacement in projectile motion.

Back

Δx = vₓt

Front

What is the value of the initial vertical velocity component (vᵧᵢ) when a marble rolls off a horizontal table?

Back

0 m/s

Front

If a marble falls from a table 0.85 m tall, what is the time it takes to reach the floor? (Use g = 9.8 m/s²)

Back

0.42 s

Front

Why does the horizontal velocity component (vₓ) remain constant during projectile motion?

Back

Gravity only affects the vertical component.

Front

Why is it necessary to solve for time using the vertical motion equation before calculating the horizontal velocity in projectile motion problems?

Back

The time of flight is determined by vertical displacement.

Front

What does the term ½gt² represent in the equation Δy = vᵧᵢt + ½gt²?

Back

The effect of gravity on vertical displacement

Front

A 14 kg boulder is pushed off a cliff with velocity v = (14.0 m/s)x̂ + (2.0 m/s)ŷ. Will the object experience a larger vertical or horizontal acceleration?

Back

Larger vertical acceleration

Front

Is the vertical motion of a golf ball hit into the air uniform?

Back

No, because vertical acceleration due to gravity is present

Front

Graph representing acceleration vs. time for horizontal motion of a projectile.

Back

A horizontal line at zero