Question

In: Physics

a person throes a vall upward ibti the air from a roof railing with an initial...

a person throes a vall upward ibti the air from a roof railing with an initial velocity of 15m/s. calculate at what timf after being released, the ball passes a point 8 m above the person hands and 5 m below the roof railing? also plot the velocity as a function of time for the ball thrown upward and coming diwnward direction

Expert Solution

Initial velocity of ball

Height to reach

Consider the required time to reach given height is

Velocity when the ball reached the height is

We know

Consider the max height reached by the ball is

Time taken to reach maximum height

Consider the time taken to reach below the roof railing is

Total time required is

genius_generous answered 1 year ago

(a) You throw a beach ball upward with an initial velocity of v0. When the air...

(a) You throw a beach ball upward with an initial velocity of v0. When the air resistance is linear Fdrag = -bv, find the maximum height of the ball, the time of flight, and the final velocity. (b) You throw a beach ball upward with an initial velocity of v0. When the air resistance is quadratic Fdrag = -cv^2, find the maximum height of the ball, the time of flight, and the final velocity. (c) You throw a beach ball...

A stone is thrown vertically upward with an initial velocity of 20 m/s. Air resistance is...

A stone is thrown vertically upward with an initial velocity of 20 m/s. Air resistance is considered negligible. (1) At what time does it reach the peak? (2) What is the maximum height it reaches? (3) What is speed of the stone just before it hits the ground? The velocity of a 1-kg particle moving along the x axis changes from vi = -2m/s to vf = -5m/s in 3s. (1) What are the change in momentum and impulse for...

•A ball is thrown upward from an initial height of 4.9 m with an initial speed...

•A ball is thrown upward from an initial height of 4.9 m with an initial speed of 9.8 m/s •How high is the ball 2.0 s later? •What is the velocity of the ball at its highest point •When does it reach Its highest point •How high does the ball go? •When does the ball hit the ground? •How fast is it going when (right before) it hits the ground?

A 180-lb person jumps out of an airplane with initial upward velocity of 5 ft/s at...

A 180-lb person jumps out of an airplane with initial upward velocity of 5 ft/s at a height of 3000 ft (assuming the air resistance is proportional to its falling speed). The air resists the body's motion with a force of 2 lb for each ft/s of speed. Assuming the constant gravity is 32 ft/s^2 (1) find its velocity v = v(t) (2) find its terminal velocity (3) find the distance of falling x = x(t) (4) find the duration...

Wile standing at the edge of the roof of a building, you throw a stone upward...

Wile standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.79m/s. the stone is subsequently falls to the ground, which is 12.1m below the point of where the stone leaves your hand. How much time is the stone in the air?

A rocket is fired upward from some initial height above the ground

11. A rocket is fired upward from some initial height above the ground. Its height h in feet above the ground t seconds after it is fired is given by h = -16t2 + 48t +448.(i) What is its initial height? __________ ft. (ii) What is its maximum height? ___________ ft.(iii) How long does it take to reach the ground? __________ sec.

A baseball is thrown from the roof of 23.5 m -tall building with an initial velocity...

A baseball is thrown from the roof of 23.5 m -tall building with an initial velocity of magnitude 10.5 m/s and directed at an angle of 52.4° above the horizontal. What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance. What is the answer if the initial velocity is at an angle of 52.4° below the horizontal? If the effects of air resistance are included, will part (a) or (b)...

A rocket takes off vertically from the launchpad with no initial velocity but a constant upward...

A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.5 m/s^2. At 10 s after takeoff, the engines fail completely so the only force on the rocket from then on is the pull of gravity. A) What is the maximum height the rocket will reach above the launchpad? B) How long after engine failure does it take for the rocket to crash back down?

A ball is thrown vertically upward from a height of 5 ft with an initial velocity...

A ball is thrown vertically upward from a height of 5 ft with an initial velocity of 40 feet per second. Note that the acceleration of the ball is given by a(t) = −32 m/s2. How high will the ball go? When does the ball hit the ground? What is the velocity of the ball when it hits the ground?

A large boulder is ejected vertically upward from a volcano with an initial speed of 40.7...

A large boulder is ejected vertically upward from a volcano with an initial speed of 40.7 m/s . Air resistance may be ignored. A) At what time after being ejected is the boulder moving at a speed 20.3 m/s upward? B) At what time is it moving at a speed 20.3 m/s downward? C)When is the displacement of the boulder from its initial position zero? D)When is the velocity of the boulder zero? E)What is the magnitude of the acceleration...