If a force accelerates 4.5 kg at 40. m/s2, that same force would accelerate 18. kg by how much?
A) 0.18 km/s2
B) 40. m/s2
C) 10. m/s2
D) 32. ft/s2
E) 0.16 km/s2
C
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Velma is in a train moving north at 20 m/s. She throws a stone toward the rear of the train, at 5 m/s relative to herself. Mort, standing beside the tracks, sees the stone move
A) south at 15 m/s. B) south at 25 m/s. C) north at 25 m/s. D) north at 15 m/s. E) north at 20 m/s.
When a force is applied to an object the work done is
A. Negative B. Positive C. There is no work D. All of these are possible
Refer to Figure 6-11. Block A has a mass of 2.00 kg and rests on a rough table and is connected to block B, which has a mass of 3.00 kg, after passing over an ideal pulley, as shown. Block B is released from rest. The coefficient of kinetic friction between block A and the table is 0.300. What is the acceleration of the masses?
A. 6.54 m/s2 B. 3.92 m/s2 C. 4.71 m/s2 D. 0.981 m/s2 E. 5.89 m/s2
When the pendulum bob shown here is at its highest point, its velocity is _________ and its acceleration is _________
a. a maximum/zero b. zero/a maximum c. zero/zero d. a maximum/a maximum