A force acts on a particle, which is initially at rest; the force is F=(3i+4j)N. The particle is initially at di=(0.25i+0.50j)m. After t=2.0s, the particle is located at df=(3.25i+4.50j)m.  a) How much work has been done by the force? b) What is the power provided by this force? c) What is the magnitude of the final velocity for the particle?

14. A coin slides over a frictionless plane and across an y coordinate system from the origin to a point with ry coordinates (3.0 m, 4.0 m) while a constant force acts on it. The force has magnitude 2.0N and is directed at a counterclockwise angle of 100 from the positive direction of the r axis. How much work is done by the force on the coin during the displacement?

Hello, can you help me with this problem please? Thank you.

In the movie Independence Day (mild spoilers, but old movie) Captain Steven Hiller (played by Will Smith) pulls an alien wrapped in a parachute across the desert.  Hiller pulls the parachute/alien with a constant force of 259. N for a distance of 2.8 x 105 m.  How much work did he do?

1. A force of F = 5.6 Ni + 9.7 Nj + 7.9 Nk is applied to a particle in space to move it at a distance r = 2.6mi - 5.8mj - 9.7mk . Determine the work done by force.

An object is subjected to a friction force with magnitude 6.60 N, which acts against the object's velocity. What is the work (in J) needed to move the object at constant speed for the following routes? у (m) В (5.00, 5.00) x (m) A (a) the purple path O to A followed by a return purple path to O (b) the purple path O to C followed by a return blue path to O the blue path O to C followed by a return blue path to O (d) Each of your three answers should be nonzero. What is the significance of this observation? O The force of friction is a conservative force. O The force of friction is a nonconservative force.

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The (non-conservative) force propelling a 1.40 x 103-kg car up a mountain road does 6.90 x 106 J of work on the car. The car starts from rest at sea level and has a speed of 28.0 m/s at an altitude of 2.40 x 102 m above sea level. Obtain the work done on the car by the combined forces of friction and air resistance, both of which are non-conservative forces. Number Units

On a playground slide, a child has potential energy PE = 450.0 J at the top of the slide. Thechild’s mass is 25.0 kg. (For simplicity, take the value of g to be 10.0 m/s2 in this problem.) When the child slides down to the bottom of the slide, her KE = 300.0 J. a) What was the height of the slide?b) How much was the work done by friction?c) How fast was the child moving when she reached the middle of the slide? (Assume that thework done by friction is half of what you get in (b). Note that the PE2 is not zero this time.)

A force F=(4- 3N acts on an object as it moves in the x direction from the origin to S. The work done on the object by the force is Select one: а. 50 J b. 42 J С. 36 J d. 28 J