Blake's true weight is 600 N (magnitude), and his apparent weight at a certain time is 800 N (magnitude). What is his acceleration at this time? Use g = 10.0 m/s2 2.) Kyle's true weight is 600 N (magnitude), and her apparent weight at a certain time is 500 N (magnitude). What is her acceleration at this time? Use g = 10.0 m/s2

Blake's true weight is 600 N (magnitude), and his apparent weight at a certain time is 800 N (magnitude). What is his acceleration at this time? Use g = 10.0 m/s2 2.) Kyle's true weight is 600 N (magnitude), and her apparent weight at a certain time is 500 N (magnitude). What is her acceleration at this time? Use g = 10.0 m/s2

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 14PE: Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 10,000 kg....

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Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 10,000 kg. The thrust of its engines is 30,000 N. (a) Calculate its the magnitude of acceleration in a vertical takeoff from the Moon. (b) Could it lift off from Earth? If not, why not? If it could, calculate the magnitude of its acceleration.
The weight of an astronaut plus his space suit on the Moon is only 250 N. How much do they weigh on Earth? What is the mass on the Moon? On Earth?
A block of mass m1= 10 kg is on a frictionless table to the left of a second block of mass m2 = 24 kg, attached by a horizontal string (Figure WU4.13). If a horizontal force of 120 N is exerted on the block m2in the positive x-direction, (a) use the system approach to find the acceleration of the two blocks. (b) What is the tension in the string connecting the blocks? (See Section 4.6.) Figure WU4.13
14. A student apparently weighs 180lb, in an elevator that is accelerating at the rate 5ft/s^2 upward. ( use acceleration due to gravity = 32.2 ft/s^2)A) what is the true weight of the student?B) what will be the apparent weight of the student when the elevator now decelerates at the rate of 2ft/s^2 upward?C) what should be the elevator's acceleration in order for the apparent weight of the student to be equal to 160lb?
1. How long does a ball return to the thrower if it was given an initial vertical velocity of 80 ft/s? 2. Determine the amount of force (parallel to the inclination) required to prevent a 250 lb box from sliding down a 36.87 degree inclined plane, when the coefficient of static friction is 0.15. 3. What is the acceleration of a car which uniformly increases its speed from 13 km/hr to 50 km/hr in 25 seconds?
2. An object has a weight of 490 N here on Earth and 186 N on Mars. a) What is its mass here on Earth? b) What is its mass on Mars? c) What is the acceleration of gravity on Mars?
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An object whose mass is 10 lb weighs 9.6 lbf. Determine (a) the local acceleration of gravity, in ft/s2 . (b) the mass, in lb and slug, and the weight, in lbf, of the object at a location where g 32.2 ft/s2 .
1. Which statement about Issac Newton is not true? A. Made huge advances in math, science, and other area B. His discoveries came naturally in "flashes of brilliance" due to his genius C. He came from very humble beginnings D. He thought long and hard to solve problems 2. An object falling at a steady rate as the force of gravity is equal to air resistance, is not in a state of a. Dynamic equilibrium b. Mechanical equilibrium c. non-free fall d. Free-fall 3. An object falling under only the influence of gravity is in a. Free fall b. Non-free fall c. Mechanical equilibrium d. Dynamic equilibrium
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You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. You find that when a certain tool is pushed on a frictionless horizontal surface by a 12.9 N force, it moves 16.8 m in the first 2.20 s, starting from rest. You next observe that if you release this tool from rest at 10.0 m above the ground, it takes 2.78 s to reach the ground. 1. What does the tool weigh on Newtonia? 2. What would it weigh on Earth?
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