Projectiles

What variable letter is range?

• X
• Y
• V_x
• V_y

What variable letter is altitude?

• X
• V_x
• Y
• V_y

For a projectile that goes up and comes by down to the same altitude, what is the overall value for y?

• 1/2 g t²
• -2 V_y / g
• 0
• sinΘ

Tags

NGSS.MS-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

What is the initial vertical velocity of a projectile at the apex of the trajectory?

• 0 m/s
• 9.8 m/s
• 9.8 m/s²
• -9.8 m/s²

Does horizontal velocity change if you ignore air resistance?

• yes
• no

Does vertical velocity change as a projectile rises and falls?

• yes 
• no

What is the shortcut for finding the time for a projectile that goes up and back down to the same altitude?

• v cos Θ
• v sin Θ
• 1/2 g t²
• -2 V_y / g

Tags

NGSS.HS-PS2-4

What formula do you use to get fall time for a projectile if you only have y?

• -2 V_y / g
• V_yi t + 1/2 g t²
• x / V_x
• V sin Θ