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James weighs 120 pounds. He ran up the steps which rose 12 feet. John weighs 91 pounds. He ran up the same steps as James. If both boys reached the top of the 12-foot stairs at the same time which boy?
To determine which boy exerted more power while running up the stairs, we can look at the work done against gravity, which is calculated using the formula: work = weight × height. James, weighing 120 pounds, exerted more force than John, who weighs 91 pounds, since weight is a factor in the work done. However, since both reached the top at the same time, John would have had to run faster, indicating he exerted more power relative to his weight. Ultimately, while James did more work due to his higher weight, John may have demonstrated greater efficiency or power-to-weight ratio in reaching the top simultaneously.
If my weight is 330 pounds and I am 5'9 tall how much over weight am I?
According to the below website, your BMI is at 48.7, which puts you largely above healthy weight. A healthy BMI should be between 18.5 and 24.9. So according to some rouch calculations, at your height a healthier weight would be closer to say, 160 lbs.
What is the weight of a cantaloupe?
There are several different varieties of cantaloupe and other factors that affect their weight. A cantaloupe is between 1.5 and 4kg, or 4 to 9 lbs.
What is the weight of a carot equal to?
The weight of a carot is equal to 200 milligrams. Carots are used to measure and weigh diamonds. A diamond's worth is determined by how many carots it has.
What is the difference between Bernoulli Principle and Archimedes principle?
The Bernoulli Principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or potential energy, highlighting the relationship between fluid velocity and pressure. In contrast, Archimedes' Principle states that an object submerged in a fluid experiences a buoyant force equal to the weight of the fluid it displaces, explaining why objects float or sink. While Bernoulli's principle focuses on fluid dynamics and pressure changes, Archimedes' principle addresses buoyancy and the forces acting on submerged objects.
How does the weight of an object relate to how fast it falls with a parachute?
The weight of an object affects how quickly it can reach its terminal velocity when falling with a parachute. Heavier objects typically reach terminal velocity faster than lighter objects due to the greater force of gravity acting on them. However, once both objects reach terminal velocity, they will fall at the same constant speed regardless of their weight.
When a sky diver reaches terminal velocity what happens to the two forces of weight and drag?
When a skydiver reaches terminal velocity, the force of weight acting downwards on the skydiver is equal to the force of drag acting upwards. This means that there is no net force acting on the skydiver, resulting in a constant velocity rather than acceleration.
What factors affect terminal velocity in a fluid?
The factors that affect terminal velocity in a fluid include the weight and size of the object, the density and viscosity of the fluid, and the shape of the object. Objects with a larger surface area or lower weight will reach terminal velocity faster, while denser fluids or more streamlined objects will increase terminal velocity.
How could a skydiver increase a his or her terminal velocity?
The more streamlined the body, the less the air resistance, and the greater the speed. Carrying a heavy weight would also help. Whilst performing the sky dive on Jupiter would also increase the terminal velocity, (because of greater g) it would cost too much to do it.
What is the greates velocity a falling object can reach called?
The greatest velocity a falling object can reach is called terminal velocity. Terminal velocity occurs when the force of air resistance on the object matches the force of gravity pulling it down, resulting in a constant speed.
What happens to free-fall velocity when air resistance equals weight?
When air resistance equals weight, the net force on the object becomes zero, resulting in a constant velocity known as the terminal velocity. In the case of free fall, the object will continue to fall at this terminal velocity as long as the forces remain balanced.
What is the terminal velocity of a bolt?
The terminal velocity of a bolt depends on its size, weight, and shape. However, for a typical bolt falling through air, the terminal velocity is usually around 200-300 miles per hour.
In free fall when the air resistance is equal to the weight of the falling object we say that the object has reached velocity.?
Yes. When the force of air resistance equals the force of gravity acting on the falling object, the net force on the object becomes zero, causing it to reach terminal velocity. At this point, the object stops accelerating and falls at a constant speed.
Is terminal velocity the same speed for any weight?
Terminal velocity for a feather will be considerably lower than the terminal velocity of a bullet. The size and shape of the object will play an important role. While objects dropped from a given height in a vacuum will fall to earth at the same velocity, the resistance caused by atmosphere will be different for different objects.
What is effect of the weight of the helicopter on the terminal speed - slide3?
The weight of the helicopter affects the terminal speed by influencing the rate at which the helicopter falls. A heavier helicopter will reach a higher terminal velocity compared to a lighter helicopter, as the force of gravity will be greater on the heavier helicopter, causing it to accelerate faster. Additionally, a heavier helicopter may require more lift to counteract its weight, which can also impact its terminal speed.
What is the terminal velocity of a balloon?
The terminal velocity of a balloon depends on factors such as its size, shape, weight, and the density of the surrounding air. However, in normal atmospheric conditions, the terminal velocity of a typical balloon is around 1-2 meters per second.
How does a skydiver increase his or her terminal velocity?
adding weight and by decresing air recistance
