1. Why do objects fall to the ground?
When you drop an object, it falls toward the Earth. Why does this happen and what force causes this?
Homework Answers
Objects fall due to gravity, which is a force that pulls objects toward the Earth’s center. Gravity depends on the mass of the objects and the distance between them. On Earth, it gives everything a downward acceleration of about 9.8 m/s².
Two objects are allowed to fall from the same height to the ground. They both start...
Two objects are allowed to fall from the same height to the ground. They both start from rest at the same time. One is just released and falls straight downward. The other is placed on a frictionless inclined plane that makes an angle of θ with the horizontal. Which one hits the ground with the highest speed? Ignore air resistance. Group of answer choices You need the angle of the incline to determine the answer. The object that falls straight...
When you drop a 0.35 kg apple, Earth exerts a force on it that accelerates it...
When you drop a 0.35 kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s^2 toward the earths surface. According to Newton’s third law, the apple must exert an equal but opposite force on Earth. If the mass of the earth is 5.98x10^24 kg, what is the magnitude of the earth’s acceleration toward the apple? Answer in units of m/s^2.
You stand on top of a picnic table and jump to the ground. Consider the time...
You stand on top of a picnic table and jump to the ground. Consider the time during which you are in the air. To an order of magnitude, (a) what is the force the Earth exerts on you? (b) What is the force you exert on the Earth? (c) What is the acceleration of the Earth? (d) How far toward you does the Earth move? Answer: Please show numbers! (a) ~103 N; (b) ~103 N; (c) ~10–22 m/s2; (d) ~10–23...
1. Is it true that as a penny drops to the ground that it exerts a...
1. Is it true that as a penny drops to the ground that it exerts a gravitational force on the earth? If so, then why do we not notice the earth move toward the coin? 2. Jim and Ellen are astronauts floating some distance apart in space. They are joined by a safety cord whose ends are tied around their waists. If Jim starts pulling on the cord, will he pull Ellen toward him, or will he pull himself toward...
An object of mass M is in free-fall (the only force on the object is its...
An object of mass M is in free-fall (the only force on the object is its own weight). Make a force diagram for this case. Use Newton’s Second Law to calculate the acceleration of the object. What would happen to the acceleration if we double the mass of the object? Why is this case different than the previous question?
Newton's Satellite Directions: Read the background information and complete the activity Newton's Thought Experiment In the...
Newton's Satellite Directions: Read the background information and complete the activity Newton's Thought Experiment In the seventeenth century, Sir Isaac Newton was studying the nature of motion and gravity. He formulated a thought experiment that would eventually become the basis of the development of satellites. Imagine an object is fired from a cannon horizontal to the plane of the earth. The projectile will travel in a horizontal direction and undergo projectile motion as gravity begins to pull the projectile downward....
Since Moon is attracted to Earth, why doesn't it fall onto Earth? because it has large...
Since Moon is attracted to Earth, why doesn't it fall onto Earth? because it has large tangential velocity because there is another equal force on the Moon that balances gravity because centrifugal force balances gravity because centrifugal force more than balances gravity because it has too much inertia to fall towards Earth A. Ocean tides occur mainly because water always runs to the low spot water always runs to the side of the Earth away from the Moon B. water...
1. If gravity on Earth provides a constant acceleration of 9.8m/s2 why aren't we all moving...
1. If gravity on Earth provides a constant acceleration of 9.8m/s2 why aren't we all moving faster and faster toward the center of the Earth all the time? 2. If Magnus Magnuson is in a tug of war match, and he is pulling on the rope with a force of 1265 N, with how much force is the rope pulling on him? 3. Describe the type of force applied by a flat road to a tire when a car is...
An object of mass m 5 kilograms falls vertically to the ground under the action of...
An object of mass m 5 kilograms falls vertically to the ground under the action of the earth gravitational acceleration of magnitude g 10 meters per second squared. Denote by y vertical coordinate, positive upwards, and let y 0 be at the earth surface. Recall that the force on the object in this situation is f--mg, where the negative sign says the force points downwards. (a) Write the differential equation satisfied by this system. y"-10 Note: Write t for t,...
Why is it important to use very small objects such as the polystyrene spheres in order to perform the lab? What is it that causes the polystyrene spheres to become electrically charged as they leave...
Why is it important to use very small objects such as the polystyrene spheres in order to perform the lab? What is it that causes the polystyrene spheres to become electrically charged as they leave the atomiser? Is it theoretically possible for an object to have a charge of 4.00 x 10-19 C? Explain why or why not. Suppose the separation between charged plates is 4.00 mm, the voltage of the plates is 200.0 V, and that the charge on...
Newton's Satellite Directions: Read the background information and complete the activity Newton's Thought Experiment In the seventeenth century, Sir Isaac Newton was studying the nature of motion and gravity. He formulated a thought experiment that would eventually become the basis of the development of satellites. Imagine an object is fired from a cannon horizontal to the plane of the earth. The projectile will travel in a horizontal direction and undergo projectile motion as gravity begins to pull the projectile downward....
Since Moon is attracted to Earth, why doesn't it fall onto Earth? because it has large tangential velocity because there is another equal force on the Moon that balances gravity because centrifugal force balances gravity because centrifugal force more than balances gravity because it has too much inertia to fall towards Earth A. Ocean tides occur mainly because water always runs to the low spot water always runs to the side of the Earth away from the Moon B. water...
An object of mass m 5 kilograms falls vertically to the ground under the action of the earth gravitational acceleration of magnitude g 10 meters per second squared. Denote by y vertical coordinate, positive upwards, and let y 0 be at the earth surface. Recall that the force on the object in this situation is f--mg, where the negative sign says the force points downwards. (a) Write the differential equation satisfied by this system. y"-10 Note: Write t for t,...
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