ANSWER THE FOLLOWING WITH SHORT SOLUTION

i docs.google.c0m 7. A ball thrown vertically upward * 1 point returns to the starting point in 3s. What is the initial speed? 0 (A)0m/s O (B) 9.8m/s O (o)14.7 m/s 0 (D)29.4m/s O Other: 8. If you toss a ball upward with a * 1 point certain initial speed, it falls freely and reaches a maximum height h at time t. If you double the initial speed, what will be the new maximum height reached by the ball? 8:31 I LTE 58 a docs.google.com 3. What is the vertical component of * 1 point a displacement having a magnitude of 10 m in the direction of 300 N of E? O (A) 5m O (B) 6.5m O (C) 7m O (D) 7.1m 4. A speedboat increases in speed * 2 points uniformly from 20m/s to 30m/s in a distance of 200m. What is the acceleration (m/s2) of the speedboat? O ( A) 1m/s^2 O (B) 1.25 m/S12 O ( C) 2 m/s1 2 O ( D) 2.5 m /S1 2 5. Of the follow * 1 pointi docs.google.c0m 1. Which of the following refers to the * 1 point concepts that are needed to describe motion, without any reference to forces. 0 (A) kinematics O (B) dynamics 0 (C)thermodynamics O (D) mechanics 0 Other: 2. Which of the following refers to the * 1 point instantaneous rate of change of position per unit time? 0 (A)Displacement O (B) Instantaneous speed. 0 (C) Instantaneous velocity 0 (D) Instantaneous acceleration O Other: will be the new maximum height reached by the ball? 9. Luigi jumps straight upward at * 1 point 15.0 m/s. How high is he when travelling at 8.0 m/s downwards? O (A) 8.21m O (B) 9.3m O (C) 9.4m O (D)10.2m O Other: i docs.google.c0m 5. Of the following situations, which * 1 point one is impossible? A body having: 0 (A) Velocity east and acceleration east. 0 (B)Vel0city east and acceleration west. (C)Variable velocity and non-zero accele- ration. O (D) Constant velocity and variable accele- ration. Other: 6. A CLSU student throws a broken * 1 point cellphone with a velocity of 1000 m/s at 60.0 degrees with the horizontal. Neglecting air resistance, what is the magnitude of the x- component of its velocity after \"Is? 0 (A) 40 m/s 0 (B) 50m/s O (o) 86.6 m/s 0 (0)100 m/s I O Other