9. Carlos jumps out of a hovering helicopter. After he opens his parachute, his acceleration due to gravity decreases
to zero. This is because
A The force of air resistance becomes equal in magnitude to his weight.
B. The force of gravity has become zero.
C. Air resistance must be zero
D. He must have struck the ground,
Solved
Show answers
More tips
- F Food and Cooking How to Make Delicious Cabbage Pies: The Best Recipes!...
- S Science and Technology The Metric System in Our Daily Life: Understanding Its Importance...
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- C Computers and Internet How to Learn to Type Fast?...
- F Food and Cooking Delight for Gourmets: How to Prepare Liver Pate...
- S Style and Beauty How to braid friendship bracelets?...
- H Health and Medicine Mercury Thermometer Danger: What to do when a thermometer breaks?...
- F Food and Cooking Which Calamari Salad is the Most Delicious?...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
Answers on questions: Physics
- P Physics High above the town of Whoville there lived a Grinch and his dog Max. The Grinch being antisocial has never gone to school so needs your help with some physics concepts. a) Start...
- P Physics What happens when a force is applied to an object in stable equilibrium NEED IT IN 5 MINS PLZZ ILY...
- P Physics Enrique is given information about a satellite orbiting Earth. R = 3. 8 Ă— 108 m T = 18 days In order to calculate the tangential speed of the satellite, what should Enrique do first?...
- P Physics Backward. Compare the loudness of sound waves that constructively interfere with the loudness of sound waves that destructive interfere....
- P Physics о O Down 1. high-energy lightwaves that can cause problems when they reach Earth s surface 2 can t fins the definition to this, high-energy light waves that can cause problems when...
- L Law During a trial, the prosecutor presents a gun as evidence to the crime. The gun comes with a document showing chain of custody. What information would this document include?...
- G Geography A ___ is a settlement ruled by a distant country. - Clan - Colony - Village - Tribe...
- M Mathematics What is the polynomial of least degree with the given zeroes O with a multiplicity of 3, -1 with a multiplicity of 2, i, and -i?...
- G Geography A popular American hamburger chain successfully entered the fast food market in India by altering the menu to include vegetarian burgers instead of burgers made with beef. This can...
- C Chemistry (5C) Which of these elements has the smallest atomic radius? A)Calcium B)Fluorine C)Aluminum D)Bromine...
Ответ:
A The force of air resistance becomes equal in magnitude to his weight.
Explanation:
When Carlos jumped out of the helicopter, he fell with a downward force which is proportional to his weight.
His weight is the product of his mass and acceleration due to gravity.
When the parachute is deployed, air resistance between the air molecules and the surface area of the parachute generates a drag force, which acts upwards.
If the drag forces exceeds his weight, then his net force will be directed upwards.
If his weight exceeds the drag forces, then the net force on his body will be downwards.
In the case that his drag force, and his weight are equal, there will be a zero net force on him, and he will experience no acceleration.
So, if after he opens his parachute, his acceleration due to gravity decreases to zero, then we can say that this is because the force of air resistance (drag) becomes equal in magnitude to his weight.
Ответ:
V02=9.78L
Explanation: