Projectile 2

As an object travels through the air, its vertical velocity 

• changes continuously
• remains the same

What is the horizontal acceleration of a projectile? (neglect air resistance)  

• 0 m/s²
• 9.8 m/s²

Tags

NGSS.HS-PS2-1

What is the vertical acceleration of a projectile? (neglect air resistance) 

• 0 m/s²
• 9.8 m/s² down
• 9.8 m/s² up

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

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

• - 9.8 m/s²
• + 9.8 m/s²
• 0 m/s

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/s²
• 0 m/s²

If a bullet is horizontally shot at the same moment another bullet is dropped from the same height, which will hit the ground first?(neglect air resistance) 

• Shot Bullet
• Dropped Bullet
• Hit at Same Time

At the top of a projectile's path above Earth, the vertical acceleration of an object is

• is zero
• goes from positive to negative
• goes from negative to positive
• remains unchanged

Tags

NGSS.HS-PS2-1

A ball is thrown horizontally from the top of a building with an initial velocity of 13m/s.  At the same time, a second ball is dropped from the top of the same building.  Which of the following is the same for the two balls?

• Their final displacement
• Their paths as they fall
• Their initial horizontal velocities
• Their final vertical velocity as they reach the ground

Which of the following shapes is seen in the path of  a projectile?

• straight line
• parabola
• circle
• hyperbola

If you shoot a gun and at the same time drop a bullet which will hit the ground first? Why?

• The bullet that is shot, because it is going faster
• The dropped bullet, because gravity pulls on it.
• At the same time, because the x and y components are independent of each other. 
• This cannot happen

Tags

NGSS.MS-PS2-4