6.1 Projectiles [Revision]

6.1 Projectiles [Revision]

By Ms. Alaa Mattar

Quick Multiple Choice Questions!

​We got this!

Multiple Choice

In the absence of air resistance, the path of a projectile is a(n) _____________.

• a. Parabola.

• b. Arc

• c. Polygon

• d. Semicircle

Multiple Choice

A volleyball player hits a volleyball above the net. When is the ball’s speed the least?

• a. Just after it is hit by the player.

• b. At the highest point of its path.

• c. Just before it strikes the ground.

• d. When the horizontal and vertical components of its velocity are equal

Multiple Choice

The motion of a projectile in free fall is characterized by which of the following?

• a. ax = ay = −g.

• b. ax = constant and vy = constant.

• c. vx = constant and ay = −g.

• d. vx = constant and vy = constant

Multiple Choice

A baseball player throws a ball horizontally. Which statement best describes the ball's motion after it is thrown?

• a. Its vertical speed remains the same, and its horizontal speed increases

• b. Its vertical speed remains the same, and its horizontal speed remains the same

• c. Its vertical speed increases, and its horizontal speed increases.

• d. Its vertical speed increases, and its horizontal speed remains the same.

Multiple Choice

A projectile is fired with an initial velocity $$V_i$$   at an initial angle of $$30\degree$$   with the horizontal.

Which of the following pairs of graphs below best represents the horizontal components of the velocity, v, and acceleration, a, of the projectile as functions of time?

Multiple Choice

An object moving horizontally with speed v falls off the edge of a vertical cliff and takes a time t to land.

How long would it take for the object to land if it was moving with a horizontal velocity 2v?

• a. t

• b. ½ t

• c. 2t

• d. $$t^2$$  

Plenary!

Bye Bye 6.1 Projectiles!!

Open Ended

Any questions?