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11th grade Free fall worksheet

6 printable versionsChallenge Me10 questions · answer keyFree · no account

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Free fall

Grade 11 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

  1. A ball is dropped from a drone hovering 44.1 m above the ground. With g = 9.8 m/s² and no air, how long does it take to land, Ari?

  2. A ball is dropped from a drone hovering 78.4 m above the ground. With g = 9.8 m/s² and no air, how long does it take to land, Bo?

  3. A ball is dropped from a drone hovering 122.5 m above the ground. With g = 9.8 m/s² and no air, how long does it take to land, Esme?

  5. In the position-time graph, what is the ball's average velocity from 1 s to 2 s, Jun?

    • 9.8 m/s
    • 14.7 m/s
    • 19.6 m/s
    • 4.9 m/s

  6. In the position-time graph, why does the line curve and get steeper, Kira?

    Use the picture in question 4.

    • The ball gets heavier as it falls
    • The speed grows each second
    • The ball falls at a steady speed
    • The air pushes it down harder

  7. In the position-time graph, what is the slope of the tangent at 2 s, Luz?

    Use the picture in question 4.

    • 39.2 m/s
    • 4.9 m/s
    • 9.8 m/s, from 19.6 m ÷ 2 s
    • 19.6 m/s

  8. Milo says a ball launched straight up has no acceleration at the top. Agree or disagree?

    • Agree: acceleration points the way it moves
    • Agree: zero velocity means zero acceleration
    • Disagree: it is still 9.8 m/s² down
    • Agree: heavier balls fall faster

  9. Noah says the acceleration points up while a launched ball is rising. Agree or disagree?

    • Agree: acceleration points along the motion
    • Agree: heavy balls get a bigger g
    • Agree: at the top it becomes zero
    • Disagree: g points down the whole flight

  10. Pia says Apollo 15's hammer and feather landing together shows that mass doesn't change free fall. Agree or disagree?

    • Disagree: they stopped at the top first
    • Disagree: acceleration follows the motion
    • Disagree: heavier things fall faster everywhere
    • Agree: with no air, both fell at the same g

  11. A ball dropped from a drone takes 3 s to land, with no air. How high was the drone, Ren?

    • 14.7 m
    • 29.4 m
    • 88.2 m
    • 44.1 m
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11th grade Free fall worksheet – printable
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About this worksheet

Free fall. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can use g = 9.8 m/s² for a dropped ball with no air: v = gt, d = ½gt², t = √(2h ÷ g) and v² = 2gd.
  • I can read a drop's velocity-time graph (slope g, area = distance) and its curving position-time graph (tangent slope = speed).
  • I can describe a launched ball: it slows going up, has a = 9.8 m/s² down at the top, and returns at its launch speed.
  • I can explain air resistance against mass. A feather and a hammer fell together on the airless Moon (Apollo 15), and a flat sheet floats only because of air.

Standard: supports HS-PS2-1

Words to know

free fall: Moving under gravity alone, with no air resistance

g: Free-fall acceleration near Earth: about 9.8 m/s², downward

air resistance: The push of air against a moving object

vacuum: A space with the air pumped out

tangent: A line touching a curve at one point; its slope is the speed

Common mistakes

Your child used 4.9 instead of 9.8. The speed grows by the full 9.8 m/s each second; the ½ belongs only in the distance formula.

Your child forgot to square the time. Distance fallen is ½gt²: double the time gives four times the distance.

Your child used gt² instead of ½gt². The ½ comes from the triangle under the velocity-time line.

Questions parents ask

What is the most common mistake with free fall?

Your child used 4.9 instead of 9.8. The speed grows by the full 9.8 m/s each second; the ½ belongs only in the distance formula.

Are these 11th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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