Question

magnitude 7. An initially stationary block of mass m is on a floor. A force of acceleration due to gravity) is then applied at an angle of θ-20° to the oseontal, What is the magnitude of the acceleration of the block across the floor if p, 0.620 and p 0530 A) Om/s B) 005 m/s C) 2.17 m/s D) 0.20 m/s' E) 20 m/s 28. The same heavy wooden block is dragged by a force F along a rough steel plate, as shown below for two possible situations. The magnitude of the acceleration is the same for the two situations; do not assume that the magnitude of F is the same. The magnitude of the frictional force in (ii), as compared with that in (i) is: A) the same B) greater C) less D) less for some angles and greater for others E) can be less or greater, depending on the magnitude of the applied force 0 0) 29. Block A, with mass ma, is initially at rest on a horizontal floor. Block B, with mass ma, is initially at rest on the horizontal top surface of A. The coefficient of static friction between the two blocks is μ ," Block A is pulled with a horizontal force. It begins to slide out from under B if the force is greater than: 30. A baseball has a terminal speed of 42 m/s in air ( terminal speed in water (e = 1.0 x 10' kg/m)? 1.2 kg/m). What would be its A) 0.05 m/s B) 15 m/s C)18 m/s D)42 m/s E) 1200 m/s

Answer 1

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