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If a constant, nonzero force is applied to an object, what can you say about the velocity and acceleration of the object?
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- Only one force acts on an object.Can the object have zeroacceleration? Can it have zero velocity? Explain.For a certain interval of time, an object is acted on by a constant non-zero force. Which of the following statements is true for this interval of time ? ( select all that apply) the objects velocity changes the object is accelerating the objects velocity can only increase the object is at rest the object is moving with constant veloThree forces act on a 5-kg object: F1 = -2.0i + 3.0j N, F2 = 5.0i + 3.5j N, and F3 = 0.5i- 1.0j N. Assuming the object starts at rest at to = 0, write its velocity as a function of time.
- A 320-lb object is released from rest 500 ft above the ground and allowed to fall under the influence of gravity. Assuming that the force in pounds due to air resistance is - 20v, where v is the velocity of the object in ft/sec, determine the equation of motion of the object. When will the object hit the ground? Assume that the acceleration due to gravity is 32 ft/sec and let x(t) represent the distance the object has fallen in t seconds. Determine the equation of motion of the object. x(t) = When will the object hit the ground? The object will hit the ground after seconds. (Round to three decimal places as needed.)A 800-lb object is released from rest 600 ft above the ground and allowed to fall under the influence of gravity. Assuming that the force in pounds due to air resistance is - 20v, where v is the velocity of the object in ft/sec, determine the equation of motion of the object. When will the object hit the ground? Assume that the acceleration due to gravity is 32 ft/ sec and let x(t) represent the distance the object has fallen in t seconds. Determine the equation of motion of the object. x(t) = |16.25Only one force acts on an object. Can the object have zero acceleration? Can it have zero velocity? Explain in words
- A 500-lb object is released from rest 500 ft above the ground and allowed to fall under the influence of gravity. Assuming that the force in pounds due to air resistance is - 25v, where v is the velocity of the object in ft/sec, determine the equation of motion of the object. When will the object hit the ground? Assume that the acceleration due to gravity is 32 ft/ sec and let x(t) represent the distance the object has fallen in t seconds. Determine the equation of motion of the object. x(t) = 3] When will the object hit the ground? The object will hit the ground after 3 seconds. (Round to three decimal places as needed.)A 800-lb object is released from rest 600 ft above the ground and allowed to fall under the influence of gravity. Assuming that the force in pounds due to air resistance is - 20v, where v is the velocity of the object in f/sec, determine the equation of motion of the object. When will the object hit the ground? Assume that the acceleration due to gravity is 32 ft/sec and let x(t) represent the distance the object has fallen in t seconds Determine the equation of motion of the object. x(t) = 16 25A particle with mass m = 5.00 kg accelerates according to a = (−2.60 + 2.30) m/s2. (a) What is the net force acting on the particle? (Express your answer in vector form.) F = (b) What is the magnitude of this force? N=
- For how long a time must a tow truck pull with a force of 550 N on a stalled 1200 kg car to give it a forward velocity of 2.0 m/s?How much force is needed to make a rocket move in constant velocity in a frictionless outer space? Its equal to the net force acting in the object the force needed is equal to its thrust O incomplete data given O e=mc2 O nothing, just nothingA person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.0100 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.