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freddydiaz25
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the solution.? I just need answers. Thank you
1.)Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 7.8 N, acting 53° north of west. What is the magnitude of the body's acceleration?
2.)A 2.94 kg object is subjected to three forces that give it an acceleration a = -(8.00 m/s2)i + (6.00 m/s2)j. If two of the three forces are Fvec1 = (36.6 N)i + (17.8 N)j and Fvec2 = -(12.0 N)i + (8.00 N)j, find the third force.
3.)A 1.2 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 3.0 m + (4.0 m/s)t + ct^2 - (1.8 m/s^3)t^3, with x in meters and t in seconds. The factor c is a constant. At t = 3.0 s, the force on the particle has a magnitude of 36 N and is in the negative direction of the axis. What is c?
4.)A "sun yacht" is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from the Sun on a cost-free but slow trip. Suppose that the spacecraft has a mass of 600 kg and receives a push of 30 N.
(a) What is the magnitude of the resulting acceleration?
(b) If the craft starts from rest, how far will it travel in 1 day?
(c) How fast will it then be moving?
5.)A 300 kg rocket sled can be accelerated at a constant rate from rest to 1600 km/h in 2.4 s. What is the magnitude of the required net force?
6.)A car traveling at 58 km/h hits a bridge abutment. A passenger in the car moves forward a distance of 61 cm (with respect to the road) while being brought to rest by an inflated air bag. What magnitude of force (assumed constant) acts on the passenger's upper torso, which has a mass of 41 kg?
Thanks
1.)Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 7.8 N, acting 53° north of west. What is the magnitude of the body's acceleration?
2.)A 2.94 kg object is subjected to three forces that give it an acceleration a = -(8.00 m/s2)i + (6.00 m/s2)j. If two of the three forces are Fvec1 = (36.6 N)i + (17.8 N)j and Fvec2 = -(12.0 N)i + (8.00 N)j, find the third force.
3.)A 1.2 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 3.0 m + (4.0 m/s)t + ct^2 - (1.8 m/s^3)t^3, with x in meters and t in seconds. The factor c is a constant. At t = 3.0 s, the force on the particle has a magnitude of 36 N and is in the negative direction of the axis. What is c?
4.)A "sun yacht" is a spacecraft with a large sail that is pushed by sunlight. Although such a push is tiny in everyday circumstances, it can be large enough to send the spacecraft outward from the Sun on a cost-free but slow trip. Suppose that the spacecraft has a mass of 600 kg and receives a push of 30 N.
(a) What is the magnitude of the resulting acceleration?
(b) If the craft starts from rest, how far will it travel in 1 day?
(c) How fast will it then be moving?
5.)A 300 kg rocket sled can be accelerated at a constant rate from rest to 1600 km/h in 2.4 s. What is the magnitude of the required net force?
6.)A car traveling at 58 km/h hits a bridge abutment. A passenger in the car moves forward a distance of 61 cm (with respect to the road) while being brought to rest by an inflated air bag. What magnitude of force (assumed constant) acts on the passenger's upper torso, which has a mass of 41 kg?
Thanks