F. has an upward acceleration. 8. A ball which is dropped from the top of building strikes the ground with a speed of 30 m /s. Assume air resistance can be ignored. The height of the building is approximately: A. 15m . B. 30 m . C. 45 m . D. 75 m . E. 90 m . 9. At a certain time, an object in free fall has velocity 4.0 m/s in the upward direction.

Dec 09, 1996 · (D) the upward force of its weight as it rises. Once the grapefruit reaches its maximum height, it will begin to experience the downward force of its weight. Answer: (B) only the downward force of its weight, both before and after it reaches its maximum height. Problem 4: You are swimming at the beach. You swim out past the breaking surf so ...

An object is thrown upward from the top of an 80 foot building with an initial velocity of 64 feet per second. The height h of an object after t seconds is given by the quadratic equation (((h=-16t^2+64t+80))). When will the object hit the ground. Since we're looking for "h," or the height at 0, we then set the equation to 0, and solve for t.

2. The original design for the monument was much different than what ended up being built. Robert Mills’ winning design called for a pantheon (a temple-like building) featuring 30 stone columns ...

a stone is thrown from the top of a cliff. the height h in meters, of the stone above the ground level after t seconds is modeled by the function h(t)=115+12.25t-4.9t^2. a)give a physical interpretation of the meaning of the constant term 115 in the model. b)write h(t) in the form A-B(t-C)^2, where A B and C are constant to be found.

Height definition is - the part that rises or extends upward the greatest distance : the highest part : summit. How to use height in a sentence. Synonym Discussion of height.

8. A ball is thrown horizontally at a speed of 20. meters per second from the top of a cliff. How long does the ball take to fall 19.6 meters to the ground? 1. 1.0 s 3. 9.8 s 2. 2.0 s 4. 4.0 s No Explanation Available. 1 9. A book is pushed with an initial horizontal velocity of 5.0 meters per second off the top of a desk.