A car is driven 1200 m north at 20.0 m/s and then driven 1600 m east at 25.0 m/s. What is the magnitude of the average velocity for this trip? O a. 16.1 m/s O b.62.2 m/s O c. 31.3 m/s O d. 11.3 m/s e. 22.6 m/s
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- 3. Two runners start at the same time at opposite ends of a 100 m track and run toward each other. Runner A runs at a steady 7.0 m/s and runner B runs at a constant 6.0 m/s. When and where will these runners meet?13. A lumpfish is thrown straight up into the air and passes a squirrel perched on a tree 4.0 seconds after being released. It passes the same squirrel on its way back down 1.5 seconds later. What was the initial velocity of the lumpfish?A ball is rolling at an initial velocity of 44.0 km / h East when it experiences an acceleration of 4.20 m / s² West for 1.50 seconds. 1. Determine the ball's final velocity in m/ s 5.92 m /s East 18.5 m /s West 50.3 m / s East O 37.7 m / s West
- 8:07 AM P. +234 813 145 1114 1 minute ago O+ 4653 91 . A stone thrown vertically upwards returns to the ground. Which of the following figures represents the velocity-time graph? ΣΤ T 2T ??? D. Vel n о26. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by -0.50t, in m/s² for t in seconds. By the time it stops it has traveled: A. 15 m В. 31 m С. 62 m D. 85 m Е. 100 m ans: D6. A super ball dropped from rest falls 2 meters vertically downward and rebounds 2 meters upward in a total time of 1.6 seconds. Just as it arrives at its initial starting point, what are the magnitude of the average velocity and the average speed, respectively? 0 m/s and 1.3 m/s zero and 2.5 m/s 2.5 m/s and 2.5 m/s 2.5 m/s and zero 1.3 m/s and 1.3 m/s
- 2. A child running around in a field has the following position and velocity at time t = 0: x = 1.5 m, y = 2.0 m Vx = -3.5 m/s, vy=-1.0 m/s At time t = 2.5 s, it has the following position and velocity: x = -2.0 m, y = 1.5 m vx = -0.50 m/s, v, = 2.0 m/s Using this information, find the child's average velocity and average acceleration during that time interval. Write your answers in unit vector notation.2. Niko accidently throws his cellphone out of an open window horizontally with a velocity of 4.5 m/s. Niko quickly looks out the window and notices a friend outside. The window is 8.5 m above the ground. How far away from the building should the friend stand to catch the cell phone at ground level?During 9.73 s, a motorcyclist changes his velocity from v1.x = -41.5 m/s and v1.y U2.y = 28.7 m/s. = 12.9 m/s to U2 x = -15.5 m/s and Find the components of the motorcycle's average acceleration during this process, aav.x and Aav,y. day,x = m/s2 dav,y = m/s2
- A whale swims due east for a distance of 8.0 km in a time of 2.50 h. It then turns around and moves west for 2.0 km in a time of 0.50 h. It turns around again and heads 4.0 km due east in a time of 1.00 h. What is the total distance travelled by the whale. What is the total displacement? What is the average speed for the entire trip? What is the average velocity for the entire trip? There are five quantities discussed in this question: distance, displacement, time, speed, and velocity. Which of these are scalars and which are vectors?A stone is dropped from rest near the surface of moon. The velocity of the stone after 3 seconds is [Given data : acceleration due to gravity of moon, 9moon = 1.6m/s2,acceleration due to gravity of earth, gearth = 9.8 m/s²] O a. +29.4m/s O b. -4.8m/s O c. -29.4m/s O d. +4.8m/sv(t) (m/s) 39. Sketch the acceleration-versus-time graph from the following velocity-versus-time graph. Velocity vs. Time 10 864 2 0 -2. -4 -6 -8 -10- 0 Search this book 10 Q 1 1 I 20 30 40 50 60 70 80 90 100 Time (s)