Solve Q2 d.1: A ball is fired trom the tep of a 40 m tall building. If the bali is fired with an initial velocity of10 m/s that makes an angle 30° above the hori2ontal direction, How far horizontally from the base ofthe building will the ball hit the ground:A. 9.8 mC. 29.5 mD. 35.7 mE. 45.2 mB 15.3 mQ.2: Three masses are in contact withh euch other and lie an a smooth horzontal surface, as shown inthe adjacent figure if M, = 10 kg, M; = 20 kg, M, = 20 kg, and the force i = 100 N. The magnitude (inN) of the contact force between M, and M, is:C. 60M,M2м,B. 40E. 100A. 20D. 80Q.3: True or False: "The action and reaction forces are always equal in magnitude, apposite indirection and act on the same body".A. TrueQ.4: A 1-kg particle is attached to the end of a rope (J),It rotates in a vertical circle of radius 1 m.When the particte is at the lowest noint (bottom) of the circle, its speed is 10 m/s. The :ension (in N)in the rope at this point is:B. FalseC. 213.8Q.5: A force F = (3i + 4k) N acts on a particle that moves from the origin to the point (2,1,3) m.A. 75.6B. 83.2D. 25.7E. 109.8The work (in Joules) done on the particle by this force during this displacement is:C. 25Q.6: True or False:"The work done by any conservative force through any closed path is alwaysА. 6В. 18D. 52E. Zerozero".A. TrueB. False

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Q.2: Three masses are in contact withh each other and lie an a smooth horzontal surface, as shown in the adjacent figure if M, = 10 kg, M; = 20 kg, M, = 20 kg, and the force i = 100 N. The magnitude (in N) of the contact force between M, and M, is: A. 20 C. 60 M, M2 M, B. 40 E. 100 D. 80

Q.2: Three masses are in contact withh each other and lie an a smooth horzontal surface, as shown in the adjacent figure if M, = 10 kg, M; = 20 kg, M, = 20 kg, and the force i = 100 N. The magnitude (in N) of the contact force between M, and M, is: A. 20 C. 60 M, M2 M, B. 40 E. 100 D. 80

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 38P: A fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/b). (a) Assuming the pitcher can...

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