If the object is accelerating, you should draw the coordinate system such that one of the coordinates is O Along the standard x-axis O Oriented in any desired direction O Parallel to the acceleration O Along the standard y-axis
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- 5a. An airplane maintains a speed of 693 km/h relative to the air it is flying through as it makes a trip to a city 724 km away to the north. (Assume north is the positive y-direction and east is the positive x-direction.) What time interval is required for the trip if the plane flies through a headwind blowing at 32.4 km/h toward the south? hConsider three displacement vectors A = (3x - 3ý) m, B = (- 4y) m,and C = (-28 + 5ý) m. The magnitude and direction of D = A+ B + Č is m and _of %3D %3D O 2.8, 45, S of W O 6.3, 18, S of W O 2.8, 45, N of E O 6.3, 18, N of EA baseball is hit at an angle 0 and travels along a parabolic arc before it strikes the ground. Which one of the following statements is true? O The acceleration of the ball decreases as the ball moves upward. O The velocity of the ball is O when the ball is at the highest point in the arc. O The acceleration of the ball is 0 when the ball is at the highest point in the arc. O The velocity of the ball is a maximum when the ball is at the highest point in the arc. O None of the above.
- ng A woman is on a train leaving the station at 3.0 m/s, while a friend waving goodbye runs alongside the car she's in. Call the train's direction of motion the + direction. ▼ Part B Once the train has reached a speed of 10 m/s, how fast must the woman walk, and in which direction, to keep up with her friend? Express your answer with the appropriate units. VIw= Submit μÀ Value 3 @ m S O Previous Answers Request Answer Review ?In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 99.0 km/h , to his enemy's car, which is going 115 km/h . The enemy's car is 17.0 m in front of the Indy's when he lets go of the grenade. A If Indy throws the grenade so its initial velocity relative to him is at an angle of 45 ∘ above the horizontal, what should the magnitude of the initial velocity be? The cars are both traveling in the same direction on a level road. You can ignore air resistance. B Find the magnitude of the velocity relative to the earth.Express the following vector in the form v = v,i+v2j+v3k. 3u - v if u = (2,9, -7) and v = (3, - 9,5)
- A throws the ball with an initial velocity V0 = 90 km / hr at an angle α with the horizontal. If the ball goes through B, Determine a) the angle α and b) the angle θ that the vector VB makes with the horizontal.Please answers parts a and bYou decide to walk from your home to your friend's house. He lives 164 meters away from you at an angle 59° South of East. What is the eastern component of your displacement? m What is the southern component of your displacement? m