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- A ball was dropped from the top of a building. If the ball was from a height of 134 meters from the ground, find the speed of the ball 3 seconds after it was dropped. Vo = 0 m/s L--1= 3.00 s Select one: Oa. 143.8100 m/s Ob. 29.4300 m/s Oc. 1314.5400 m/s Od. 0.0732 m/sBefore the SpaceX Falcon 9 rocket enters into outer space, it accelerates upward according to a(t)=3t^2 in the unit of m/s^2. Find the speed of the rocket at t = 5.0s? Assume the initial speed of the is 10 m/s. rocket O A. 125 m/s O B. 75 m/s O C. 135 m/s O D. 10 m/s6. If an object is dropped from the top of a ledge, what is the object's Initial velocity? O 9.81 m/s O -1 m/s O-9.81 m/s OOm/s
- A stone is thrown outward, at an angle of 30° with the horizontal into the river from a cliff, that is 75 meters above the water level at a velocity of 54 km/hr. How long it will take the stone to hit the surface of the river? a. 0.06159 minb. 0.059157minc. 0.01596 mind. 0.07915 min13. A tennis ball rolled off the edge of a table that has a height of 1.00 m. 1.00 m 0.72 m The ball took 0.45 s to hit the ground 0.72 m from the table. What was the horizontal velocity DII @ #3 $ 3 e r 00000A ball was dropped from the top of a building. If the ball was from a height of 339 meters from the ground, find the speed of the ball 3 seconds after it was dropped. = 0 m/s y t = 3.00 s Select one: a. 3325.5900 m/s b. 0.0289 m/s c. 348.8100 m/s d. 29.4300 m/s
- A volcano ejects a chunk of rock straight up at a velocity of vy = 30 m/s. Ignoring air resistance, what will be the velocity vy of the rock when itfalls back into the volcano’s crater?A. > 30 m/s B. 30 m/s C. 0 m/s D. -30 m/s E. < -30 m/sA falling object has a speed of 10.0 m/s. After traveling 10.0 m, what is the speed of the object? O a. 17.20 m/s O b.20.0 m/s O c. 14.07 m/s O d. 10.0 m/s49. Given these two velocities, C = (4î +2ĵ -2k̂) m/s and E= (5î -4ĵ +5k̂), find the magnitude of the velocity, v= 2C –E. a. 12.4 m/s b. 17.0 m/s c. 21.0 m/s d. 27.6 m/s
- A rock is thrown downward from the top of a 40.0 m tower with an initial speed of 12 m/s. Assuming negligible air resistance, what is the speed of the rock just before hitting the ground? a) 28 m/s b) 784 m/s c) 56 m/s d) More information is needed. e) 30 m (Help me answer this question with easiest formula possible)You drop a large rock off of a tall cliff from rest. If the rock falls for 4 seconds, calculate the velocity of the rock. Assume g = 10 m/s^2. a. 2 m/s. b. 40 m/s. c. 80 m/s. d. 12 m/s.The average speed of a car in km/hr that drives a distance of 20 km in a time of 15 minutes is? a. 80 km/hr b. 20 km/hr c. 15 km/hr d. 10 km/hr