Free Fall Exploration
This worksheet explores the fundamental concepts of free fall, including gravity, acceleration, and air resistance, suitable for Grade 9 science students.
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Free Fall Exploration
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following statements best describes free fall?
An object falling under the influence of gravity and air resistance.
An object falling only under the influence of gravity.
An object falling at a constant velocity.
An object falling upwards.
2. What is the approximate acceleration due to gravity on Earth?
0 m/s²
9.8 m/s²
100 m/s²
98 m/s²
3. In a vacuum, all objects fall with the same regardless of their mass.
4. The force that opposes the motion of an object through the air is called .
5. Air resistance has a greater effect on heavier objects than lighter objects.
True
False
6. The terminal velocity of an object is reached when the force of gravity equals the force of air resistance.
True
False
7. Describe the difference between mass and weight.
8. Explain why a feather and a hammer fall at different rates on Earth but would fall at the same rate on the Moon.
9. A ball is dropped from the top of a building. It takes 3 seconds to reach the ground. Assuming no air resistance, how high is the building?
10. If an object is thrown straight up with an initial velocity of 19.6 m/s, how long will it take to reach its highest point?