A ball is thrown vertically upward with an initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from the same initial height as the ball) with an initial speed of 24 m/s. At what height above the release point will the ball and stone pass each other?
 👍
 👎
 👁
 ℹ️
 🚩
1 answer

time that ball is in the air = t
time that stone is in the air =(t2)
distance ball goes up = 20 t  4.9 t^2
distance stone goes up = 24(t2)4.9 (t2)^2
so
20 t 4.9 t^2 = 24 t  48  4.9(t^2  4 t + 4)
20 t  4.9 t^2 = 24 t  48  4.9 t^2 + 19.6 t  19.6
solve quadratic for t
use t in distance equation for either ball or stone to get height 👍
 👎
 ℹ️
 🚩
answered by Anonymous
Answer this Question
Related Questions

science
a ball is thrown straight upward and returns to the thrower's hand after 3.00s in the air. A second ball is thrown at an angle of 30.0 deg with the horizontal. At what speed must the second ball be thrown so that it reached the same height as the one
 asked by tani
 18,290 views

Math
A ball is thrown vertically upward with an initial velocity of 96 feet per second. The distance s (in feet) of the ball from the ground after t seconds is s(t)=96t16t^2 a.) at what time will the ball strike the ground b.) for what time t is the ball more
 asked by danielle
 20,632 views

Physics
A tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s. a. what will the ball's speed be when it returns to its starting point? b. how long will the ball take to reach its starting point?
 asked by Eli
 6,869 views

Algebra
THe function h(t)=16t^2+v0t+h0 describes the height in feet above the ground h(t) of an object thrown vertically from a height of h0 feet, with an initial velocity of v0 feet per second, if there is no air friction and t is the time in seconds sine the
 asked by Joe
 10,626 views

physical science
A tennis ball is thrown vertically upward wih an initial velocity of 8.0m/s. A) What will its speed be wheen it returns to its tarting point? B) How long will it take for it to reach its starting poing?
 asked by Taylor
 2,580 views

Calculus
If a ball is thrown vertically upward from the roof of 32 foot building with a velocity of 112 ft/sec, its height after t seconds is s(t)=32+112t–16t2 . What is the maximum height the ball reaches?What is the velocity of the ball when it hits the ground
 asked by Jery
 5,128 views

Precalculus
A ball is thrown from an initial height of 1 meter with an initial upward velocity of 9 m/s. The ball's height h (in meters) after t seconds is given by the following h=1+9t5t^2 Find all the values of the t for which the ball's height is 4 meters.
 asked by Lucie
 3,458 views

Physics
A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 7.99 s. What is its initial velocity? Neglect air resistance.
 asked by WR
 4,919 views

Physics
A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 8.11 s. What is its initial velocity? Neglect air resistance.
 asked by Sandra
 604 views

Math( help please ! )
The height of a ball thrown vertically upward from a rooftop is modelled by y=5t^2+20t+50 , where h(t) is the ball's height above the ground , in meters , at time t seconds after the throw a) Determine the max height of the ball b) how long does it take
 asked by Melissa
 3,126 views

Algebra
A ball is thrown from an initial height of 2 meters with an initial upward velocity of 25m/s. The ball's height h (in meters) after t seconds is given by the following. Find all values of t for which the ball's height is 12 meters. Round your answer(s) to
 asked by Anonymous
 3,217 views

math
A ball is thrown into the air with an initial upward velocity of 48ft/s its height h in feet after t seconds is given by the function h = 16t^2 + 48t + 64 6 seconds 4 seconds 7 seconds 5 seconds
 asked by Hey Joe
 1,016 views

Calculus 1
A ball is thrown vertically upward from ground level with initial velocity of 96 feet per second. Assume the acceleration of the ball is a(t) = 32 ft^2 per second. (Neglect air Resistance.) (a) How long will it take the ball to raise to its maximum
 asked by Bobby
 5,168 views

physics
A ball thrown vertically upward from the ground with an initial velocity of 50m/s. what is the total time spent by the ball in the air
 asked by Aderinola
 1,133 views

Algebra
A ball is thrown into the air with an initial upward velocity of 60 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 60t + 6. What will the height be at t = 3 seconds? A) 3 B) 4***** C) 5 D) 6
 asked by Nina
 3,229 views

Physics
A red ball is thrown down with an initial speed of 1.3 m/s from a height of 28.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 24.7 m/s, from a height of 0.8 meters above the
 asked by Funnyguy
 4,703 views

physics
A 0.50 kilogram ball is thrown vertically upward with an initial kinetic energy of 25 joules. Approximately how high will the ball rise ?
 asked by lucy
 10,630 views

Physics
A ball is thrown upward at a speed v0 at an angle of 57.0˚ above the horizontal. It reaches a maximum height of 7.4 m. How high would this ball go if it were thrown straight upward at speed v0?
 asked by ..
 1,424 views

physics
A ball is tossed vertically upwards with a speed of 5.0 m s–1. After how many seconds will the ball return to its initial position? plz help !
 asked by physiclover
 823 views

Mathematics
A ball is thrown vertically upward with an initial velocity of 96 feet per second.The distance s (in feet) of the ball from the ground after t second is s(t)=96t16t².at what time t is the ball more than 128 feet above the ground?
 asked by Andrea
 386 views
Still need help?
You can ask a new question or browse existing questions.