A rock is dropped from rest from a height h above the ground. It falls and hits the ground with a speed of 11 m/s. From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s? Neglect air resistance. 1.4h 4.0h O 0.71h O2.0h 03.0h

13 J At the maximum height the velocity of a particle thrown vertically up is. Infinity O 9.8 m/s O 9.8 cm/s O Zero O

A ball is dropped from a height of 4m above the ground. The velocity of the ball when reaching the ground is a. 6.26 m/s b. -9.8 m/s c. 8.85 m/s O d. -8.85 m/s

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Kalea throws a baseball directly upward at time t = 0 at an initial speed of 14.5 m/s. How high h does the ball rise above its release point? Ignore air resistance and use g = 9.80 m/s². h = m

С. 13 m/s? D. 4.2m/s? 2. A car has an initial position of 2.7m, an initial velocity of -1.42 m/s, and a constant acceleration of 1.7m/s. What is the position of the car at the time of 1.65s? A. 1.96m В. 6.7m С. 3.8m D. 2.5m 3. Mr. Purley crashed his car with the greatest g force ever survived by a human being. He decelerated from 53.6m/s to zero in a distance of only about .59m calculate Mr. Purley's acceleration. B. 2874m D. 3234m A. 2687m C. 2435m 4. An astronaut drops a rock on an asteroid. The rock is released from a height of 1.45m above the ground 1.89 seconds later. What is the acceleration due to gravity on this asteroid. A. -.17 m/s2 C. -.70 m/s² B. .35 m/s² D. .406 m/s2 MacBook Air

An object is thrown upwards with a speed of 12 m/s. How long does it take to reach a height of 3.0 m above the projection point while descending? Neglect air resistance.     0.42 s     1.2 s     4.2 s     2.2 s     3.1 s

A car is traveling at 22.0 m/s when the driver suddenly applies the brakes, giving the car a constant deceleration. The car comes to a stop in a distance of 120.0 m. How fast was the car moving when it was 30.0 m past the point where the brakes were applied? O 23.5 m/s 15.0 m/s 7.50 m/s 19.1 m/s 28.0 m/s

An object is dropped off a building. If it takes 10 seconds to get halfway to the ground, how long does it take to fall the entire distance? Ignore air resistance. O 17s O 20 s O 14 s O4.0 s

Standing on the edge of a cliff that is 800 m above the ground. You take a stone and throw it straight up imparting the stone with an initial velocity of 8.30 m/s (UP). What is the velocity of the stone 10 seconds after you throw it up? Air resistance doesn't have an effect