Physics: Projectile

What is the velocity of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? ( g is -9.8 m/s²)?.

• -9.8 m/s, -19.6 m/s, -29.4 m/s, -39.2 m/s, -49 m/s

• -4.9 m/s, -9.8 m/s, -14.7 m/s, -19.6 m/s, -25.5 m/s

• -5 m/s, -19.6 m/s, -44.1 m/s, -78.4 m/s, - 122.5 m/s

• The velocity is always -9.8 m/s².

What is the acceleration of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? ( g is -9.8 m/s²)?.

• -9.8 m/s, -19.6 m/s, -29.4 m/s, -39.2 m/s, -49 m/s

• -4.9 m/s, -9.8 m/s, -14.7 m/s, -19.6 m/s, -25.5 m/s

• -5 m/s, -19.6 m/s, -44.1 m/s, -78.4 m/s, - 122.5 m/s

• The acceleration is always -9.8 m/s².

Tags

NGSS.HS-PS2-1

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

• True
• False

Tags

NGSS.MS-PS2-4

The picture of the position vs. time graph shows an object that is...

• accelerating/speeding up
• moving at a constant speed 
• not moving 
• accelerating/slowing down. 

Tags

NGSS.HS-PS2-1

Which graph represents zero acceleration (constant velocity)?

• A
• B
• C
• D

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

Tags

NGSS.HS-PS2-4

While an object is travelling upwards it's acceleration is

• upwards
• downwards

Tags

NGSS.HS-PS2-1

When an object gets to it's maximum height it's acceleration

• changes direction

• stays upwards

• stays downwards

• zero

What happens to the horizontal velocity of a projectile launched horizontally from a cliff?

• increases

• decreases

• remains the same

What happens to the vertical velocity of a projectile launched horizontally from a cliff?

• increases

• decreases

• remains the same