Physics; Projectile Motion Test

Remains a non-zero constant

For general projectile motion witht no air resistance the horizontal component of projectiles velocity

They had at the same time

In an air-free chamber, a pebble is thrown horizontally, and at the same instant a second pebble is dropped from the same. Compare the times of fall of the two pebbles

The ball

A ball is thrown horizontally from the top of a tower at the same instant that a stone is dropped vertically which object is traveling faster when it hits the level ground below if neither of them experiences any air resistance

True

A boulder rolls of a very high cliff and experiences no significant air resistance. While it is falling, its trajectory is never truly vertical.

Be directly over the package

A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will

projectile

An object with independent vetical and horizontal motions that moves through the air under only the force of gravity an initial thrust

Is always zero

For general projectile motion with no air resistance the horizontal component of a projectiles acceleration

Remains in nonzero confidence

For general projectile motion with no air resistance the vertical component of a projectiles acceleration

maximum height

The height of s projectile when the verticle velocity is zero

range

The horizontal distance that a projectile will travel

trajectory

The path of a projectile

Flight Time

The time that a projectile is in the air

Vox

Vector that represents the horizontal component of the initial velocity

X

Vector that represents the horizontal displacement of a projectile

Ay

Vector that represents the vertical acceleration of a projectile; its value is equal to the acceleration of gravity

Voy

Vector that represents the vertical component of the initial velocity

Equilibrium

When the net force acting on an object is zero

The horizontal acceleration is always zero and the vertical acceleration is always a nonzero constant down word

Which of the following statements are true about an object in two-dimensional projectile motion with no air resistance

In your hand

You are riding in an enclosed train car moving at 90 km/h. If you throw a baseball straight up where will the baseball land

Neither the balls velocity nor its acceleration are zero

a player kicks a soccer ball in a high arc toward the opponents goal at the highest point in It's trajectory