physics, Quickly please solve queeeeestion 9 Q7) The coefficient of kinetic friction between the ground and a sled is 0.25. If the sled's mass is 8.0kg. how much force is required to move the sled at a constant velocity?a) 2.0 Nb) 20 NQ8) Constant force F-(i+4k) N acts on 2 kg object moved it displacement r-(2i+3j-4k) mWork done by the force on object is:a) 11 Jb)-11 Jc)-14 Jd) 14 Je) reroQ9) Person of 80 kg lifting himself by thread (de) 8m upward in 10 second. the average powerIn watt is:a) 640b) 64c) 6400d) 6.4 e) noneQ10) An object with initial speed of 6 m/s slides a distance of 9 m before coming to rest on a roughhorizontal surface. The kinetic coefficient friction is:a) 0.12b) 0.2c) 123.2d) 0.73e) 0.49Q11) A boy of mass 40 Kg skies down a 20 m high hill if the friction force is not negligible and the speedin the bottom is 10m/sec, how much work is done by frictional force:a)-102203b)-7300Jc)-8760Jc) 320 Nd) 3.5Q12) Amass of 35 kg is acted on by two forces: force F, is 30 N to cast and force F; is 24 N tothe magnitude of the acceleration in (m/s) is:a) 1.1b) 4.1c) 2.7Q13) If a 3.0 mm, b-4.0 mm, 21-60 nC, 22-80 nC,and q-30 nC in the figure, the magnitude of the total electricforce on q?a) 1.ANb) INc) 1.7 Nd) 2 Ne) 0.5 Nb) 4x 10"d)-5840e) 2 x 10"e) 0,820-d) 32 NQ14) An object is determined to have a negative charge of 48 nC. The object has an excess ofelectrons equal:a) 3 × 10¹¹d) 5 x 10¹north.

Name: physics, Quickly please solve queeeeestion 9 Q7) The coefficient of ki
Uploaded: 2024-03-20T06:57:25.000Z
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Description: physics, Quickly please solve queeeeestion 9 Q7) The coefficient of kinetic friction between the ground and a sled is 0.25. If the sled's mass is 8.0kg. how much force is required to move the sled at a constant velocity?a) 2.0 Nb) 20 NQ8) Constant fo