ǁ That’s a lot of hot air! A hot-air balloonist, rising vertically with a constant speed of 5.00 m/s, releases a sandbag at the instant the balloon is 40.0 m above the ground. (See Figure 2.54 ) After it is released, the sandbag encounters no appreciable air drag. (a) Compute the position and velocity of the sandbag at 0.250 s and 1.00 s after its release. (b) How many seconds after its release will the bag strike the ground? (c) How fast is it moving as it strikes the ground? (d) What is the greatest height above the ground that the sandbag reaches? (e) Sketch graphs of this bag’s acceleration, velocity, and vertical position as functions of time. Figure 2.54 Problem 51
ǁ That’s a lot of hot air! A hot-air balloonist, rising vertically with a constant speed of 5.00 m/s, releases a sandbag at the instant the balloon is 40.0 m above the ground. (See Figure 2.54 ) After it is released, the sandbag encounters no appreciable air drag. (a) Compute the position and velocity of the sandbag at 0.250 s and 1.00 s after its release. (b) How many seconds after its release will the bag strike the ground? (c) How fast is it moving as it strikes the ground? (d) What is the greatest height above the ground that the sandbag reaches? (e) Sketch graphs of this bag’s acceleration, velocity, and vertical position as functions of time. Figure 2.54 Problem 51
ǁ That’s a lot of hot air! A hot-air balloonist, rising vertically with a constant speed of 5.00 m/s, releases a sandbag at the instant the balloon is 40.0 m above the ground. (See Figure 2.54) After it is released, the sandbag encounters no appreciable air drag. (a) Compute the position and velocity of the sandbag at 0.250 s and 1.00 s after its release. (b) How many seconds after its release will the bag strike the ground? (c) How fast is it moving as it strikes the ground? (d) What is the greatest height above the ground that the sandbag reaches? (e) Sketch graphs of this bag’s acceleration, velocity, and vertical position as functions of time.
You throw a baseball directly upward at timet=0 at an initial speed of 12.3 m/s.
The maximum height is 7.72 m.
At what time does the ball pass throughhalf the maximum height?Ignore air resistance and assume g=9.8 m/s
Question 2
(2.1) An object is shot from the ground at 75m/s at an angle of 45⁰ above the horizontal. How high does the object get before beginning its descent?(2.2) A ball is launched at an angle of 30o above the horizontal with an initial velocity of 8m/s. At what time is its vertical velocity 0 m/s
(2.3)A book rests on a table. The force of gravity pulls down on the book with a force of 20 newtons. What prevents the book from accelerating downward at 9.8 m/s2? (2.3) According to Newton’s third law, an action reaction pairs of forces have: (2.4). What could be the reason a car moving on a horizontal road gets thrown out of the road while taking a turn.(2.5) The angular velocity of a body moving with a constant speed v in a circle of radius r is given by?
a 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25m/s2 and feels no appreciable air resistance. when it has reached a height of 525m, its engines suddenly fail so that the only force acting on it is now gravity. What is the maximum height this rocket will reach above the launch pad?
Essential University Physics: Volume 2 (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.