Projectile Motion Practice

What is the definition for the acceleration due to gravity?

• the apparent force that seems to pull on a moving object, but does not exert a physical outward push on it, and is observed only in rotating frames of reference
• the size of the gravitational force between two objects
• the acceleration of an object in free fall, resulting from the influence of Earth’s gravity
•  the gravitational force between any two objects is directly proportional to the square of the distance between their centers

What is the definition for the Law of Universal Gravitation?

• the apparent force that seems to pull on a moving object, but does not exert a physical outward push on it, and is observed only in rotating frames of reference
• the size of the gravitational force between two objects
• the acceleration of an object in free fall, resulting from the influence of Earth’s gravity
•  the gravitational force between any two objects is directly proportional to the square of the distance between their centers

What is the definition for trajectory?

• the path of a projectile through space
• the field that surrounds any object with mass
•  the acceleration of an object in free fall, resulting from the influence of Earth’s gravity
• the apparent force that seems to pull on a moving object, but does not exert a physical outward push on it, and is observed only in rotating frames of reference

Tags

NGSS.HS-ESS1-4

What is a projectile's instantaneous velocity at the top of it's flight?

• 0 m/s
• 9.8 m/s
• It depends on the day
• You would need the numbers to figure it out.

What is a projectile's instantaneous acceleration at the top of it's flight?

• 0 m/s²
• 9.8 m/s²
• It depends on the day
• You would need the numbers to figure it out.

I am walking around the classroom tossing a tennis ball in the air and catching it.  If I toss the tennis ball with a horizontal velocity of 3 m/s and an initial vertical velocity of 1 m/s, what is velocity in the x-direction at the top of the tennis ball’s flight?

• 0 m/s
• 1 m/s
• 3 m/s
• 9.8 m/s

I am walking around the classroom tossing a tennis ball in the air and catching it.  If I toss the tennis ball with a horizontal velocity of 3 m/s and an initial vertical velocity of 1 m/s, what is velocity in the y-direction at the top of the tennis ball’s flight?

• 0 m/s
• 1 m/s
• 3 m/s
• 9.8 m/s

I throw a baseball straight up in the air with a velocity of 7 m/s.  What is the velocity of the baseball when it hits my hand?

• 0 m/s
• -7 m/s
• -9.8 m/s
• Impossible to tell

A basketball that is thrown to the ring follows a path that is ______________.

• hyperbolic

• parabolic

• linear

• circular

What happens to the horizontal velocity of a projectile as it travels along the curved path?

• increases

• decreases

• stays the same

• none of these