PHYSICS Kinematics Fourteen Projectiles in 2 Dimensions 1) A marble traveling at 1 m/s rolls off the edge of a level table. If it hits the floor 30 cm away from the base of the table, how high is the table? 2) A ball is thrown at a speed of 40 m/s at an angle of 50 degrees above the horizontal on level ground. a. How long will the ball be in the air? b. What will the horizontal velocity be? c. What will be the total speed of the ball at impact? (22 + 62 = c2 ) d. BONUS: What is the total final velocity? 3) A ball is projected from the ground at an angle of 30 degrees above the horizontal at a speed of 128 m/s Ignoring air friction, calculate: a. how long it will be in the air b. how high it will rise c. what its horizontal range will be. d. BONUS: What is the total final velocity? 4) An object is projected downward at an angle of 30 degrees below the horizontal from the top of a building 170 m high. Its initial speed is 40 m/s. Calculate: a. the final velocity in the vertical direction, b. time it takes to hit the ground, c. horizontal displacement. d. BONUS: What is the total final velocity? 5) A rock is thrown off a bridge 250 m high. The rock is thrown with a velocity of 10 m/s at an angle of 53 degrees above the horizontal. Calculate: a. the final velocity in the vertical direction, b. time it takes to hit the ground. c. horizontal displacement. d. BONUS: What is the total final velocity? 1) 0.441 m high 3) 13.06 sec 5) -70.45 m/s 2) 6.24 sec 208.98 m 8 sec 160 m 1447.84 m 48.1 m 40 m/s 4) -61.6 m/s 4.2 sec 145.5 m