An inclined plane making an angle 0! 25 degrees with the horizontal has a pulley at its top. A 30kg block on the plane is connected to a freely hanging 20-kg block by means of a cord passing over the pulley. Compute the distance the 20-kg block will fall in 2 5 starting from rest Neglect friction. ' (2 Points] 0 {'l 11:... 2 A body is projected downward at an angle of 30 degrees with the horizontal from the top of the building 170 m high. Its initial speed is 40 m/s. .... How long will it take before striking the ground? * 170 m (2 Points)3 A rifle bullet has a muzzle velocity of 680 ft/s. If it is aimed 45 degrees from the horizontal, it will reach its maximum range. Evaluate the maximum range. * (2 Points)In the gure. the 84:9 object is subject to the fates F1 =30 N and F2=40 N. Find the acceleration oi the object. ' (2 Points) 11 A 1.00-kg brick rests on the surface of the Earth at the equator (6378 km). Calculate the following: (a) the gravitational force on the brick, (b) the centrifugal force on the brick, (c) the weight of the brick, (d) the acceleration due to gravity, (e) centrifugal acceleration, (e) free-fall acceleration. (Non-anonymous question()) * (10 Points)A 7-kg object is subjected to two forces, F1=20i+30j N and F2=8i-50j N. Find the acceleration of the object. . (2 Points) Oasi- (15);=10 A 400-g block originally moving at 12- cm/s coasts 70 cm along a tabletop before coming to rest. What is the coefficient of friction between block and table? * (2 Points)6 On the figure, the two boxes have identical masses, 40 kg. Both experience a sliding friction force with u = 0.15. Find the acceleration of the boxes. . (2 Points) 0.87 mg 30 30" 0.5 mg mgA projectile is fired with initial velocity 95 m/s at an angle of 50 degrees from the horizontal. After 5 s, it strikes the top of a hill. What is the elevation of the hill above the point of firing? * (2 Points) HillA body projected upward from level ground at an angle of 50 degrees with the horizontal has an initial speed of 40 m/s. How long will it be before it hits the ground? * (2 Points) SIT5 A baseball is thrown with an initial velocity of 100 m/s at an angle of 30 degrees above the horizontal. How far from the throwing point will the baseball attain its original level? * (2 Points)