Agenda and Announcements 4/15

Ignoring air resistance, which of the following correctly shows what an object would do if it rolled off a cliff?

• A

• B

• C

What is a projectile?

• An object that is in the air in free-fall accelerated by gravity

• An object that is stationary on the ground

• An object that is only moving horizontally

• An object that is not affected by gravity

In the air, the only force acting on a projectile is _______.

• gravity

• friction

• magnetism

• electricity

The path a projectile takes is _______.

• parabolic

• linear

• circular

• zigzag

The path followed by a projectile flying or an object is called its _________.

• trajectory

• velocity

• momentum

• mass

What does the red curved line labeled 'Trajectory' in the diagram represent?

• The speed of the object

• The path followed by the projectile

• The height of the object

• The weight of the object

What happens to the motion on the Y-Axis as an object moves up and then down?

• Speeds up on the way up and slows down on the way down

• Slows down on the way up and speeds up on the way down

• Moves at constant speed both ways

• Stops at the top

Horizontal and Vertical motion are completely, 100% INDEPENDENT of each other.

• True

• False

What does it mean that horizontal and vertical motion are independent?

• The acceleration due to gravity affects both X and Y axis equally.

• The acceleration due to gravity only affects the Y-axis motion.

• The velocity in the X-axis determines the Y-axis motion.

• Both axes always have the same motion.

No matter the velocity in the X-Axis, the Y-Axis is doing something ________.

• different

• similar

• constant

• identical