Multiple choice

/ 1. As shown, a ball is thrown from the top of one building toward a tall building 50 meters away. The initial velocity of the ball is 20 meters per second with 40 above horizontal. How far above or below its original level will the ball strike the opposite wall? A. 9.592 m below C. 10.233 m below B. 9.771 m below D. 14.456 m below ENGGPHYS | 7:30-7. 10. In Problem No. 8, find the tension of the rope to the right of the 20 kg block. A. 131.6769 N C. 140.3182 N B. 135.7162 N D. 153.2286 N2. A projectile is fired horizontally with a speed of 30 meters per second from the top of the cliff 80 meters high. How long will it take to strike the level ground at the base of the cliff, how far from the foot of the cliff will'it strike, and with what velocity will it strike? A. 4.0406 5, 121.8123 m, 49.679 m/s B. 4.0406 5, 121.2183 m, 49.769 m/s s C. 4.0406 5, 121.1382 m, 49.967 m/s D. 4.0406 5, 121.2183 m, 49.679 m/s _, . 3. A ballast bag is dropped from a balloon that is 300 meters above the ground and rising at 13 meters per second. Find the bag's maximum height reached relative to the ground and the time at which it hits the gmund. A. 308.6224 m, 9.6228 s 8. 308.6224 m, 9.2628 s C. 309.2264 m, 9.2628 s 0. 309.2264 m, 9.6228 s 1' 4. A World Series batter hits a home run ball with a velocity of i. 40 m/s at an angle of 26 degrees above the h-orizontaL A ' fielder who can reach 3 meters above the ground is backed up against the bleacher wall, which is no meters from home plate. The ball was 120 cm above the ground when hit. How high above the fielder's glove does the ball pass? A. 5.399? m _ ~ . ' C. 5.9793 m B. 5.7399 m ' D. 5.937? m _. . 5. A MID-gram block with initial speed 91' 80 cm/s slides along a horizontal tabletop against a friction force of 0.70 N. How far will it slide before stopping? A. 18.2857 cm C. 24.2329 cm 8. 21.9747 cm D. 27.4917 cm i 6. A 20-kg crate hangs at the end of a tong rope. How far does '1 the crate moved up if the tension in the rope is 250 N in 5 ' seconds if the crate's initial velocity is 15 *m/s? A. 104.55 m C. 112.45 m B. 108.75 m B. 115.95 m 7. A cord passing over a frictionless, massless pulley has 6-kg object tied to one end and a 12-kg object tied on the other end. Compute the tension in the cord and acceleration of the objects. A. 76.4 N, 3.6267 m/s2 C. 76.4 N, 3.2667 m/s2 B. 78.4 N, 3.2667 m/s2 D. 78.4 N, 3.6267 m/s2M 8. Three blocks with masses 9 kg, 20 kg, and 15 kg are connected as shown. The coefficient of kinetic friction 5, between the table and the 20 kg block is 0.20. Find the velocity of the 20 kg block 3 seconds after it was reteaeed from rest. A. 174/101m/s C. 174/110 m/s B. 147/110 m/s D. 1:47/11m/s 9. In Problem No. 8, find the tension of the rope at the left of the 20 kg block. A. 82.3309 N C. 89.3428 N B. 86.6572 N D. 92.2091 N