Lesson: Horizontal Projectile Motion

Topic Review: Horizontal Projectile Motion

Recall...

• A projectile is a moving object upon which the only force acting is gravity.

  A force is not required to keep an object in motion.

• Gravity affects all projectiles equally!

Multiple Choice

The more mass an object has, the faster it will fall.

• True

• False

Multiple Choice

Which of the following would NOT be considered a projectile? 

• a cannonball thrown straight up
• a cannon ball rolling down a slope
• a cannonball rolling off a table
• a cannonball thrown in the air

Multiple Choice

What can you say about motion in the x and y direction?

• x is dependent on y

• y is dependent on x

• They are dependent on each other.

• They are independent of each other.

Multiple Choice

An object is projected horizontally from a cliff. The time it takes to hit the ground is

• more than if it was just dropped

• less than if it was just dropped

• the same amount of time than if it was just dropped

• impossible to determine

Multiple Choice

As an object travels through the air, its vertical velocity

• changes continuously

• remains the same

Multiple Choice

What force acts in the y direction that causes an object to travel in a parabolic trajectory?

• Friction

• Gravity

• Tension

• No force acting.

Multiple Choice

How can you describe the motion on the horizontal axis if you ignore air resistance?

• acceleration due to gravity
• constant velocity
• varying acceleration
• motionless

Multiple Choice

What is the horizontal acceleration of a projectile?

• 0 m/s²
• -10 m/s²

Multiple Choice

As a projectile moves through the air, the motion on y axis is best described as ____,

• free fall acceleration

• uniform motion

• varying speeds

• constant velocity

Multiple Choice

What is the vertical acceleration of a projectile?

• 0 m/s²
• -10 m/s²

Multiple Choice

If you throw a baseball straight up, what is its velocity at the highest point?

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

Multiple Choice

If I throw a crayon straight up at 12m/s, how fast is its speed when i catch it at the same height?

• 6 m/s
• 12 m/s
• 18 m/s
• 24 m/s

Multiple Choice

If the time to get to the highest point is 2.6 s, what would be the total time in the air?

• 2.6 s

• 3.8 s

• 5.2 s

• 4.9 s