projectiles

Which best describes the horizontal motion of a projectile, assuming no air resistance?

• Acceleration of -10 m/s²

• Acceleration of -5 m/s²

• An increasing acceleration every second

• Constant velocity

Tags

NGSS.HS-PS2-1

A marble traveling at 3 m/s rolls off the edge of a 1 m high table. What is its initial vertical speed?

• -10 m/s

• 0 m/s

• -3 m/s

• -15 m/s

Tags

NGSS.HS-PS2-4

What variable letter is horizontal velocity?

• X
• Y
• V_x
• V_y

What variable letter is vertical velocity?

• X
• Y
• V_x
• V_y

Does horizontal velocity change if you ignore air resistance?

• yes
• no

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Does vertical velocity change as a projectile rises and falls?

• yes 
• no

How is vertical velocity calculated for a projectile fired at an angle?

• V cos Θ
• V sin Θ

objects that are actually projectiles

• Any object falling with no air resistance

• An airplane flying through the air

• A falling skydiver with an open parachute

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the horizontal acceleration of a projectile?

• 0

• 9.8

• -9.8

Tags

NGSS.HS-PS2-1

When a ball is projected horizontally, what is its initial vertical velocity?

• 0

• 9.8

• -9.8

• not enough information given