projectiles

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

• 1/2 g t²

• -2 V_y / g

• 0

• sinΘ

What is the vertical velocity of a projectile at the apex (top) of the trajectory?

• 0 m/s

• 9.8 m/s

• 9.8 m/s²

• -9.8 m/s²

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

• V cos Θ

• V sin Θ

An object is launched 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

Tags

NGSS.MS-PS2-2

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

• True
• False

Tags

NGSS.MS-PS2-4

What is the horizontal acceleration of a projectile?

• 0 m/s²
• -9.8 m/s²

Tags

NGSS.HS-PS2-1

What is the vertical acceleration of a projectile?

• 0 m/s²
• -9.81 m/s²

Tags

NGSS.HS-PS2-1

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

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

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

If Mrs. Obregon throws her phone, horizontally, out a window 1 m above the ground, which equation can you use to determine how long it takes to reach the ground?

• $\Delta x=vt$

• $v_f^2=v_i^2+2ax$

• $v_f=v_i+at$

• $x=v_it+\frac{1}{2}at^2$

Tags

NGSS.HS-PS2-4

A cannon is fired horizontally from a 5.0 m tall tower. How much time will it take until the projectile hits the ground?

• 0.5 s

• 1.0 s

• 2.0 s

• 5.0 s

Tags

NGSS.HS-PS2-4