Acceleration

What is acceleration?

• The rate of change of distance over time

• The rate of change of velocity over time

• The rate of change of acceleration over time

• The rate of change of time over velocity

Which of the following is a situation where an object is considered to be accelerating?

• An object moving at a constant speed in a straight line

• An object at rest

• An object changing direction while moving at a constant speed

• An object moving in a vacuum

Tags

NGSS.MS-PS2-2

What is positive acceleration?

• When an object slows down

• When an object maintains a constant velocity

• When an object speeds up

• When an object changes direction

What is negative acceleration?

• When an object speeds up

• When an object maintains a constant velocity

• When an object changes direction

• When an object slows down

Which of the following units is not a correct unit of acceleration?

• mi/hr²

• m/s²

• km/hr²

• s/m²

What does the formula 'a = (Vf - Vi) / t' represent?

• The formula for velocity

• The formula for speed

• The formula for acceleration

• The formula for time

Why is the acceleration negative when a jet slows down to stop?

• A) Because the jet is increasing its speed

• B) Because the jet is maintaining a constant speed

• C) Because the jet is moving in the opposite direction

• D) Because the jet is decreasing its speed

What does the slope of a line represent in the context of a velocity vs. time graph?

• Distance

• Time

• Acceleration

• Speed

How is the slope of a line calculated?

• rise / run

• run / rise

• velocity / time

• time / velocity

What does Δy/Δx represent when calculating the slope?

• Acceleration / Time

• Time / Acceleration

• Velocity / Time

• Distance / Time

Tags

NGSS.MS-PS3-1