Question 9 A hockey puck slides off the edge of a table with an initial velocity of 28.0 m/s. and experiences no air resistance. The height of the tabletop above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just before it hits the ground? A) 77.2° B) 72.6° C) 12.8° D) 12.6° E) 31.8°
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- 2 M S F2 7. The captain of a small plane starts his journey by proceeding west. The speed of the plane with respect to still air is 170 km/h. A sudden south wind starts to blow at a constant speed of 87.5 km/h. What is the speed of the plane relative to the ground if no action is taken by the pilot? km/h 3 8. b) As seen by people on the ground, what is the angle made between the direction of motion of the plane with repect to the west? 9. c) At what angle with respect to the west must the pilot head his plane in order for it to proceed west as seen by the people on the ground? E 80 F3 D $ 4 F4 R F % O 5 F5 T G 6 MacBook Air IS Y & 7 H F7 U * 8 J DII FB ( 9 K F10 L P F120 = 30° Vo = 25 m/s H = 200 m dx = ? A plane flying at 25 m/s is diving with an angle of 30° to the horizontal when it drops a package at an altitude of 200 m. a) What is the horizontal displacement of the package when it hits the ground? b) What angle does the package make when it hits the ground?You throw a ball on planet X where g is not the same as on Earth. The figure below shows the vertical velocity of the ball after it leaves your hand. Air resistance is not important. v(m/s) 18.0 12.0 6.0 -6.0 -12.0 -18.0 1.0 2.0 3.0 t(s)
- A soccer player kicks the penalty ball with a speed of 75 m/s at an angle of 23.4° from the horizontal. What is the vertical displacement of the ball? O 41.78 m O 24.03 m 45.27 m O 52.56 mA 0.75 kg football is thrown from a height of 1.8 m and has an initial velocity of 16.0 m/s [R 34°U] (34° above the horizontal axis). Assuming that there is air resistance and that the ball lands on the ground, what is the distance the ball will travel horizontally?A football is kicked with an initial velocity of 11.4 m/s at an angle of 27.4°. If it hits the ground 1.9s later, how far does it travel? Answer: m