I 1....- A pendulum with a ball of known mass m and length L swings back and forth. Its direction of motion is considered positive. At its hlghest point the magnitude of the angular velocity of the ball is at a maximum value. is at a minimum value that is not zero. is zero. none of these answers is correct. is unable to be determined from the given information. 1 point The plastic region of an object is one where mess on the object will only temporarily deform the object. False Unable to be determined with the given Information True None ofthese answers is correct. One dayat the shooting range. Jill tries out a new gun 1.250 kgthat uses 15.00 g bullets. Each bullet leaves the gun with a speed of 250 m/s. Jill shoots two bullets at two different hard targets. Bullet A is stopped by its target while Bullet B bounces off of its target. Both events are assumed to occur in the same amount oftime. The bullet that experiences a largerforce when it hits its target is Bullet A. Bullet B. neither! Both bullets hit hard targets, so they experience the same force! unableta be determined from the given information, none of these answers is correct. 1min: The frequency of oscillation of a simple pendulum made with a 100 3 mass is the same for simple pendulum made with a 500 3 mass as long as the length of each pendulum is the same. Unableto be determined with the given information. True False A 3.00 kg rock is red at an angle of 60 degrees above the horizontal with an initial speed of 40.0) m/s by someone standing on the edge of a cliff 25.00~m above level ground. (The lowest point is taken to bey - 0. Air resistance is not neglected in this situation!) As the rock travels down toward the ground, its kinetic energy is decreasing. none of these answers ls correct. is increaslng. remains constant. changes in an unknown way. is zero. I A pendulum with a ball of known mass m and length L swings back and forth. Its direction of motion is considered positive. At its lowest point, the tension in the string is greater than the weight of the ball. less than the weight of the ball. is unable to be determined with the given information. none of these answers is true. is equal to the weight of the ball. 22 1 point A cable attached to the ceiling with a small block hanging from it experiences what kind of stress? Compressive Stress Plastic Stress More information is needed to answer this question. Tensile Stress None of these answers is correct. Shear Stress Elastic Stress 23 1 point What is the acceleration due to gravity near the surface of a planet that has 4 times the mass of Earth and 4 times the radius of Earth? Answer as a multiple of g, the acceleration due to gravity near the surface of Earth. 0.58 8/16 2g 168 4g None of these answers is correct. 0.25g 8g unable to be determined with the given information. 24 1 point A pendulum with a ball of known mass m and length L swings back and forth. Its direction of motion is considered positive. At its lowest point, the net force acting on the ball is unable to be determined from the given information. points horizontally. none of these answers is correct. is equal to the ball's weight. points up. is zero. 25 1 point One day Timmy was shopping at Trader Joe's. As he gets in line he sees Godzilla near the front of a line. Timmy does not think Godzilla is really in line yet because he is too far away from the cashier, so Timmy gets in line in front of Godzilla. Turns out, Timmy was mistaken. (The direction Timmy moves is considered to be positive! The ground is a horizontal surface.) Godzilla puts Timmy on the ground and then kicks him out of the store. As Timmy slides across the floor, the net force acting on him is zero. is unable to be determined with the given information. none of these answers is correct. is positive. points up. s equal in magnitude to Timmy's weight. points down. is negative.1 point The escape velocity of a mango does not depend upon its mass. False True None of these answers is correct. Unable to be determined with the given information I w- The mathematical representation of the oscillation of a piece of ham attached to a spring is given by :c(t) : 4 cm cos(107rt). The phase of the ham att : 2.5 s is 4 rad. 6.5 rad. 2.5 rad. none of these answers is correct. 25w rad 413' rad. 107r rad. .W The mathematical representation of the oscillation of a piece of ham attached to a spring is given by .r(t) = 4 cm 605(107rt). The frequency of oscillation of the ham is 5 Hz. 1/ 10 Hz. 101r Hz. none of these answers is correct. 1/5 Hz. 4 H1. 10 Hz. 57r Hz. The mathematical representation of the oscillation of a piece of ham attached to a spring is given by :1: it) : 4 cm CusilDil't). Themaximum speed of the ham is 2.577 cmls. 5n cmls. unabletu be determined with the given information. 4011' cm/s. none of these answers is correct. 101: cm/s. 1 m A particle on a spring moves in simple harmonic motion along thex-axis between turning points at :51 : 100 cm and 131 : 300 cm. At which of the following positions does the particle have its maximum elastic potential energy? Unable to hedetermine with the given information 200 cm 100 cm 150 cm 0 cm. 250 cm None ofthese answers is correct