81 ٥:١٤ م | ١,٤لد.ب/ ث QAssignment No. 1 GP I_0231e669... < Q4. A man throws a ball vertically upward from the window of a building with a speed of 15 m/s. The window is 2.0 m above the ground. How long is the ball in air before it hits the ground? A) 3.2 s B) 2.7 s C) 2.5 s D) 1.7 s E) 4.4s Q5. Figure 1 shows the velocity graph of a particle moving along the x-axis. Its initial position at -0.0 is.x-2.0 m. What is the position of the particle at 1-2.0 s. v,(m/s) 9 6 3 0 0 1 2 t(s) 3 A) 9m B) 12 m C) 7 m D) 8 m E) 6 m Q6. Ships A and B leave port at the same time. Ship A travels at 20 km/h in a direction 30° west of north, while ship B travels 20° east of north at 25 km/h. What is the distance between the two ships two hours after they depart? A) 39 km B) 31 km C) 26 km D) 22 km E) 17 km Q7 The answer to the calculation below should be reported to how many G ☐ E تحرير عرض الدليل عرض المحمول عدد الكلمات