Question 3 of 26 Page 3 of 26 Show instructions
Question 3 (1 point)
A toy car of mass 2.0 kg moving to the right with a speed of 8.0 m/s collides and entangles with another toy car of mass 3.0
kg that is moving to the left with a speed of 2.0 m/s. Immediately after the collision the velocity of the system is
Оа
Ob
Ос
2.0 m/s to the right
4,4 m/s to the right
0 m/s
2.0 m/s to the left
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Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

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Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.