Free fall
Grade 11 Science Worksheet
Circle the best answer, or write your answer on the line.
A ball is dropped from rest from a hovering drone. Using d = ½gt² with g = 9.8 m/s², how far does it fall in 0.8 s, Ari?
A ball is dropped from rest from a hovering drone. Using d = ½gt² with g = 9.8 m/s², how far does it fall in 1.2 s, Bo?
A ball is dropped from rest from a hovering drone. Using d = ½gt² with g = 9.8 m/s², how far does it fall in 2.5 s, Esme?
Read this first
Ball dropped from a hovering drone (computed values)
time (s) speed (m/s) distance fallen (m) 0 0 0 1 9.8 4.9 2 19.6 19.6 3 29.4 44.1 In the drop table, how does the speed change each second, Jun?
- It doubles
- It grows by 9.8 m/s
- It stays the same
- It grows by 4.9 m/s
In the drop table, when the time doubles from 1 s to 2 s, what happens to the distance fallen, Kira?
- It becomes four times as far
- It stays the same
- It grows by 4.9 m
- It doubles
Using the drop table's pattern, how far would the ball fall in 4 s, Luz?
- 78.4 m
- 49 m
- 39.2 m
- 58.8 m
A spring toy launches a ball straight up at 19.6 m/s. How long until it reaches the top, Milo?
- 2 s
- 0.5 s
- 19.6 s
- 4 s
A flat sheet of paper floats down while the same sheet, crumpled, drops fast. Why, Ren?
- Air slows the flat sheet much more
- Flat paper has no weight
- Crumpling makes the paper heavier
- The crumpled ball has a bigger g
A coin and a feather are dropped together inside a tube with the air pumped out. Which lands first, Tala?
- They land together
- The feather
- Neither falls without air
- The coin, since it is heavier
Which assumption lets Zee use a = 9.8 m/s² for a falling ball?
- The ball is falling on the Moon
- The ball is moving upward
- Air resistance is small enough to ignore
- The ball is heavy enough