Calculating Acceleration in One-Dimensional Motion

What is the definition of acceleration?

• Change in speed over time

• Change in velocity over time

• Change in direction over time

• Change in distance over time

Which of the following is a typical example of acceleration?

• A car moving at a constant speed

• A car going from 0 to 60 miles per hour in 3 seconds

• A car turning a corner at a constant speed

• A car stopping at a red light

Tags

NGSS.MS-PS2-2

What is the final velocity of the Porsche 911 in the example?

• 0 miles per hour

• 60 miles per hour

• 90 miles per hour

• 30 miles per hour

Tags

NGSS.MS-PS3-1

How do you calculate acceleration?

• Final velocity divided by time

• Change in distance divided by time

• Initial velocity divided by time

• Change in velocity divided by time

What is the unit of acceleration in the given example?

• Miles per second squared

• Miles per hour per second

• Miles per second

• Miles per hour

What is the simplified form of 20/3600 miles per second squared?

• 1/180 miles per second squared

• 1/360 miles per second squared

• 1/1800 miles per second squared

• 1/3600 miles per second squared

What does 1/180 miles per second per second mean?

• The car decreases its speed by 1/180 miles per second every hour

• The car decreases its speed by 1/180 miles per second every second

• The car increases its speed by 1/180 miles per second every second

• The car increases its speed by 1/180 miles per second every hour

Tags

NGSS.MS-PS2-2

Why might it be more intuitive to stick to miles per hour when discussing acceleration?

• Because it is a smaller unit

• Because it is a unit we are more familiar with

• Because it is a larger unit

• Because it is easier to calculate

What would you observe on the speedometer of a car accelerating at 20 miles per hour per second?

• The speedometer would increase by 20 miles per hour every second

• The speedometer would stay at 0 miles per hour

• The speedometer would increase by 10 miles per hour every second

• The speedometer would decrease by 20 miles per hour every second

Tags

NGSS.MS-PS2-2

What happens to the driver when a car accelerates rapidly?

• The driver feels pushed forward

• The driver feels pushed sideways

• The driver feels pushed backward

• The driver feels no change

Tags

NGSS.MS-PS3-5