Free fall
Grade 11 Science Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
A ball is dropped from rest from a hovering drone. With g = 9.8 m/s² and no air, how fast is it falling after 4 s, Ari?
A ball is dropped from rest from a hovering drone. With g = 9.8 m/s² and no air, how fast is it falling after 3 s, Bo?
In the velocity-time graph, what is the slope, Jun?
- 9.8 m/s²
- 29.4 m/s²
- 4.9 m/s²
In the velocity-time graph, how fast is the ball falling at 2 s, Kira?
Use the picture in question 3.
- 9.8 m/s
- 19.6 m/s
- 39.2 m/s
In the velocity-time graph, how far does the ball fall in the first 2 s, Luz?
Use the picture in question 3.
- 9.8 m
- 39.2 m
- 19.6 m
About what is g, the free-fall acceleration near Earth's surface, Milo?
- About 9.8 m/s
- About 98 m/s²
- About 9.8 m/s²
On the Moon, where there is no air, an astronaut dropped a hammer and a feather together. What happened, Noah?
- The hammer landed first, since it is heavier
- The feather landed first
- They landed together
On Earth, a feather drifts down slowly while a ball drops fast. Why, Pia?
- Feathers have no mass
- Air slows the feather much more
- Lighter things have a smaller g
A spring toy launches a ball straight up. What is its acceleration at the very top, Ren?
- 0 m/s², since it has stopped
- 9.8 m/s² upward
- 9.8 m/s² downward
While the launched ball is still rising, what is it doing, Tala?
- Speeding up
- Moving at a steady speed
- Slowing down