Homework Check: Velocity and Acceleration Practice Problems

In Practice Problem #3: what was the formula used in step 3 of 6 for solving an equation?

• Speed = Distance/Time

• time = speed /distance

• time = distance/speed

• Distance = time x speed

Identify step #2 for question # 2 from the Practice Problems

• s = 132 m/s

• S = Distance/Time

• D = 528 meters

• t = 4 seconds

Tags

NGSS.MS-PS3-1

Identify Step #4 from Practice Problem #1

• Solving for Speed

• D = 9000 meters

  t = 12.12 sec

• S = Distance/time

• S = 9000 m/12.12 s

• S = 742.6 m/s

Tags

NGSS.MS-PS3-1

What is the goal of reading the question carefully? (Step #1)

• to identify the given information

• to substitute into the correct formula

• in order to identify what the question is asking you to solve for

• to make sure that you have the correct units

In question #4: Why did you have to convert?

(Choose the best answer)

• to make sure that you had the correct units

• because you were given time in minutes and speed in m/s

• in order to identify the proper formula to use

• D = Speed x time

  (1080 meters)

What were you solving for in question #5?

• Speed

• Distance

• Velocity

• Average Speed

Tags

NGSS.MS-PS3-1

Identify Step #3 and Step #5 for question #6:

• S = Distance/time

• t = 450 km/120m/s

• t = distance/speed

• t = distance x speed

• t = 3750 s

What is initial velocity of the meteoroid in question # 9

• 1.8 km/s

• 1.0 m/s

• t = 0.03 sec

• 1.0 km/s

Tags

NGSS.MS-PS3-1

Which of the following was the needed conversion factor for solving question #7

• 1 hour = 60 mins

• 1 km = 1000 m

• 1 min = 60 seconds

• 1 km = 1000 m

1200 seconds is equal to ______ minutes: See question #7 Step #4