Leni Marcos apply a constant force F= - 68N i + 36N j to a 380 kg car as the car travels 48.0 m in a direction that is 240 degrees counter clockwise from the +x-axis. How much work does the force she apply on the car? A 134.4 J 1632 J 1497.6J D) 3129.6J

A snowmobile is pulling a sled (m = 380 kg) across the snowy tundra (see the figure below). The snowmobile applies a pulling force of 2480 N at an angle of pulls the sled over a distance of 49.8 m. (a) How much work is done by the snowmobile? 118719.66 J 0° (b) If the sled is also being acted on by a constant kinetic friction force of 240 N and it started from rest, what is the final speed of the sled? 2848.55 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m/s Need Help? Read It 16° with respect to the ground and

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?

i need help with these two questions!

A student is pulling her wagon along a flat level ground with a 50.0N force 30 degrees above the horizontal. This applied force is against a horizontal frictional force of 30.0 N. If the student travels 8.00 meters east, what is the net work is done on the wagon? 1. 160 J 2. 346 J 3. 586 J 4. 106 J

A student pushes a 0.40 kg box up a 30° inclined plane at a constant speed of 1.2 m/s. The student performs 5.0 J of work and the block moves a distance s along the incline before he stops pushing the box. The frictional force acting on the box is 0.9ON. Determine the value of s. Ending position Starting 30° position O 1.16 m O 1.65 m O 1.75 m O 1.85 m O 1.04 m

The figure shows a block of mass 10 Kg. Determine what work will be done by the force F that will lift said block with constant speed to a height of 18 m. µ = 0.3 a. 2931 J b. 4870 J c. 61 J d. 37 J e. 1262 J

A mechanic pushes a 2480-kg car from rest to a speed of ?v, doing 4.66e3 J of work in the process. During this time, the car moves 25.7 m. (Neglect the friction between car and road.) (a) Find ?v.  m/s ( ± 0.02 m/s) (b) Determine the horizontal force exerted on the car.  N ( ± 2 N)

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.

A nonconstant force is exerted on a particle as it moves in the positive direction along the x axis. The figure below shows a graph of this force F, versus the particle's position x. Find the work done by this force on the particle as the particle moves as follows. Fx (N) 12.0 X (m) 4.0 8.0 12.0 16.0 -12.0 (a) From x; = 0 to x = 8.0 m 44 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. J (b) From X; = 8.0 to Xf = = 16.0 m |-60 Your response differs from the correct answer by more than 100%. J (c) From x; = 0 to x = 16.0m |-30 The response you submitted has the wrong sign. J