no need for solution

Ignoring air resistance, if you drop an object, it accelerates downward at a rate of 9.81 m/s2. If instead you throw it down, what is the magnitude of the object's acceleration after you release it? more than 9.81 m/s^2 downward less than 9.81 m/s^2 upward > more than 9.81 m/s*2 upward exactly 9.81 m/s^2 upward exactly 9.81 m/s^2 downward less than 9.81 m/s^2 downwardIgnoring air resistance, if you drop an object, it accelerates downward at a rate of 9.81 m/s2. If instead you throw it down, what is the magnitude of the object's acceleration after you release it? more than 9.81 m/s^2 downward less than 9.81 m/s^2 upward > more than 9.81 m/s*2 upward exactly 9.81 m/s^2 upward exactly 9.81 m/s^2 downward less than 9.81 m/s^2 downwardWhich of the following is a valid reason for using approximations in physics? All are valid reasons, depending on the situation. possible. We do not have precise values for some quantities, so we must approximate them. O They can simplify calculations.Which of the following is a valid reason for using approximations in physics? All are valid reasons, depending on the situation. possible. We do not have precise values for some quantities, so we must approximate them. O They can simplify calculations.If the acceleration of a moving train points in the same direction as its motion, but the acceleration is decreasing in magnitude, the speed of the train is decreasing at a decreasing rate increasing at a decreasing rate increasing at a constant rate increasing at an increasing rateIf the acceleration of a moving train points in the same direction as its motion, but the acceleration is decreasing in magnitude, the speed of the train is decreasing at a decreasing rate increasing at a decreasing rate increasing at a constant rate increasing at an increasing rateYou are in the free-fall stage of a sky-dive when the sky-diver below you open her parachute. A few seconds later, she passes you at a relative velocity of 50 km/h upward. She has a velocity with respect to the air of 80 km/h downward. What is your velocity with respect to the air? 30 km/h upward none of the choices 130 km/h downward 30 km/h downwardYou are in the free-fall stage of a sky-dive when the sky-diver below you open her parachute. A few seconds later, she passes you at a relative velocity of 50 km/h upward. She has a velocity with respect to the air of 80 km/h downward. What is your velocity with respect to the air? 30 km/h upward none of the choices 130 km/h downward 30 km/h downwardWhich of the following is the most complete and precise description of a vector quantity? Vector magnitude (including its units), and direction Vector magnitude (including its units), and location of its head relative to the origin direction, and location of its head relative to the origin None of the descriptions are true Vector magnitude, direction, and the location of its tail relative to the origin of the coordinate systemWhich of the following is the most complete and precise description of a vector quantity? Vector magnitude (including its units), and direction Vector magnitude (including its units), and location of its head relative to the origin direction, and location of its head relative to the origin None of the descriptions are true Vector magnitude, direction, and the location of its tail relative to the origin of the coordinate systemYou make a bungee jump off the famous 321 m high Royal Gorge Bridge in Canon City, Colorado. It takes you 14.0 s to fall 270 m and bounce 230 m back up. What is your average speed during the jump? 35.7 m/s down 17.9 m/s 2.86 m/s down 35.7 m/5 19.3 m/s upYou make a bungee jump off the famous 321 m high Royal Gorge Bridge in Canon City, Colorado. It takes you 14.0 s to fall 270 m and bounce 230 m back up. What is your average speed during the jump? 35.7 m/s down 17.9 m/s 2.86 m/s down 35.7 m/5 19.3 m/s upYou place a book on the horizontal desk in front of you. The book's weight is 20.0 N, and the coefficient of static friction between the desk and the book is 0.25, You push the book with a horizontal force of 2.0 N, but the book does not move. What is the force of static friction on the book? O zero O 2.0 N none of the choices 0 5.ONYou place a book on the horizontal desk in front of you. The book's weight is 20.0 N, and the coefficient of static friction between the desk and the book is 0.25, You push the book with a horizontal force of 2.0 N, but the book does not move. What is the force of static friction on the book? O zero O 2.0 N none of the choices 0 5.ONWhen a race car drives a full lap around a circular track that has a radius of 210 m, the displacement of the car is the circumference of the track circumference of the track the distance travelled by the car is zero the displacement and distance travelled are equalWhen a race car drives a full lap around a circular track that has a radius of 210 m, the displacement of the car is the circumference of the track circumference of the track the distance travelled by the car is zero the displacement and distance travelled are equalWhat is the tension in the string in the figure? Assume massless string and pulleys. 196 N zero We need to know whether or not the system is moving. O 98 NWhat is the tension in the string in the figure? Assume massless string and pulleys. 196 N zero We need to know whether or not the system is moving. O 98 NWhich of the following activities most accurately describes the realm of physics? O Proposing and testing physical models by collecting experimental data O Defining virtual environment properties in a O Suggesting a theory that is only applicable to interacting galaxies Making conjectures about the universe that can be neither proved nor disprovedWhich of the following activities most accurately describes the realm of physics? O Proposing and testing physical models by collecting experimental data O Defining virtual environment properties in a O Suggesting a theory that is only applicable to interacting galaxies Making conjectures about the universe that can be neither proved nor disprovedYou throw a ball straight down with an initial speed of 5.00 m/s. The ball then bounces off the ground and moves back up. You catch it 2.00 s later when it reaches the initial height having a speed of 5.00 m/s. If the positive x-axis is directed upward, what is the average acceleration of the ball during its motion? 9.81 m/5^2 > 25,00 m/5^2 5.00 m/s^2 Zero 29.81 m/s^2You throw a ball straight down with an initial speed of 5.00 m/s. The ball then bounces off the ground and moves back up. You catch it 2.00 s later when it reaches the initial height having a speed of 5.00 m/s. If the positive x-axis is directed upward, what is the average acceleration of the ball during its motion? 9.81 m/5^2 > 25,00 m/5^2 5.00 m/s^2 Zero 29.81 m/s^2You make a bungee jump off the famous 321 m high Royal Gorge Bridge in Canon City, Colorado. It takes you 14.0 s to fall 270 m and bounce 230 m back up. What is your average speed during the jump? 35.7 m/s down 17.9 m/s 2.86 m/s down 35.7 m/s 19.3 m/s upYou make a bungee jump off the famous 321 m high Royal Gorge Bridge in Canon City, Colorado. It takes you 14.0 s to fall 270 m and bounce 230 m back up. What is your average speed during the jump? 35.7 m/s down 17.9 m/s 2.86 m/s down 35.7 m/s 19.3 m/s upWhich, if any, of the following statements are true? O' The magnitude of the product of a vector and a scalar is always larger than the magnitude of the original vector. The difference between two vectors is a vector that is always perpendicular to the sum of the two vectors. The sum of two vectors is also a vector vectors being added. The magnitude of the sum of two vectors always equals the sum of the magnitudes of the vectors being added. Opposite vectors always have opposite magnitudes and are directed along the same line. : None of the statements are true.Which, if any, of the following statements are true? The magnitude of the product of a vector and a scalar is always larger than the magnitude of the original vector. The difference between two vectors is a vector that is always perpendicular to the sum of the two vectors. The sum of two vectors is also a vector vectors being added. : The magnitude of the sum of two vectors always equals the sum of the magnitudes of the vectors being added. Opposite vectors always have opposite magnitudes and are directed along the same line. None of the statements are true.When a race car drives a full lap around a circular track that has a radius of 210 m, the displacement of the car is the circumference of the track the distance travelled by the car is the circumference of the track the distance travelled by the car is zero the displacement and distance travelled are equalYou throw a ball straight down with an initial speed of 5.00 m/s. The ball then bounces off the ground and moves back up. You catch it 2.00 s later when it reaches the initial height having a speed of 5.00 m/s. If the positive x-axis is directed upward, what is the average acceleration of the ball during its motion?