Gravitational Force, Attraction, and Mass Quick Check

these are correct for Connections Academy 10th grade Physical Science as of 1/31/23 :)

1. What information is needed to calculate the gravitational force of an object?
💗- the mass of the object and the planet's gravitational acceleration

2. When interplanetary space travel becomes viable, doctors may suggest to people with arthritis that they vacation on a planet with lower gravitational attraction and do more walking.
The gravitational acceleration on Earth is 9.8 m/s², while the gravitational acceleration on Mars is 3.7 m/s². How much less force would the vacationer be applying to their joints when walking on Mars?
💗- 2.6 times less force

3. Which of the following is true about the relationship between the gravitational force of Earth and the Moon?
💗- The Earth has a greater gravitational attraction than the Moon.

4. A high school athlete is in the weight room training for wrestling season. He is trying to bench press a bar loaded with 100 kg. How much force must he exert to lift the loaded bar and overcome the force of gravity?
Remember that a= 9.8 m/s².
A high school athlete is in the weight room training for wrestling season. He is trying to bench press a bar loaded with 100 kg. How much force must he exert to lift the loaded bar and overcome the force of gravity?
Remember that a= 9.8 m/s2
💗- 980 N

5. A group of extraterrestrial athletes travel from the Moon to Earth to train.
How would the amount of force they exert to move change on Earth?
💗- The force would need to be greater, so they would not perform as well.

i hope this helped <3

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Great! Thank you for confirming that these answers are correct for Connections Academy 10th grade Physical Science as of 1/31/23. If you have any more questions or need further assistance, feel free to ask!

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Absolutely! Here's an explanation for each answer:

1. To calculate the gravitational force of an object, you need two pieces of information: the mass of the object and the planet's gravitational acceleration. The formula to calculate gravitational force is F = m * g, where F represents the gravitational force, m is the mass of the object, and g is the gravitational acceleration on the planet.

2. In this question, we are comparing the gravitational accelerations on Earth and Mars. The gravitational acceleration on Earth is 9.8 m/s², while on Mars, it is 3.7 m/s². To determine how much less force the vacationer would be applying to their joints when walking on Mars, we can divide the gravitational accelerations. So, 9.8 m/s² divided by 3.7 m/s² equals approximately 2.6. Therefore, the vacationer would be applying about 2.6 times less force to their joints when walking on Mars.

3. The question states that the relationship between the gravitational force of Earth and the Moon is being asked. The correct answer is that the Earth has a greater gravitational attraction than the Moon. This is because the mass of the Earth is significantly larger than the mass of the Moon, resulting in a stronger gravitational force exerted by the Earth.

4. The question asks for the amount of force the athlete must exert to overcome the force of gravity while bench pressing a loaded bar weighing 100 kg. The formula to calculate this force is again F = m * g, where m is the mass of the object (100 kg) and g is the gravitational acceleration (9.8 m/s²). Substituting the values into the formula, we get F = 100 kg * 9.8 m/s², which equals 980 N. Therefore, the athlete must exert 980 Newtons of force to overcome the force of gravity while bench pressing the loaded bar.

5. The question is about how the amount of force exerted by extraterrestrial athletes would change when they travel from the Moon to Earth to train. The correct answer is that the force would need to be greater on Earth, so they would not perform as well. This is because Earth has a stronger gravitational force compared to the Moon due to its larger mass. Therefore, the athletes would need to exert more force to move objects or themselves on Earth compared to the Moon.

I hope these explanations have helped you!