Post a New Question

Physics

posted by .

A ball is dropped from the top of a 49.0 -high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 20.0 . The stone and ball collide part way up.

  • Physics -

    h1= g•t²/2
    h2= v₀•t-g•t²/2
    h1+h2 =h
    g•t²/2 + v₀•t-g•t²/2 =49

    t= 49/ v₀=49/20 =2.45 s.
    h2= v₀•t-g•t²/2 =20•2.45 -9.8•2.45²/2=
    =19.6 m

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physical science

    a stone is thrown horizontally at a speed of 5.o m/s from the top of a cliff 78.4 m high. How long does it take the stone to reach the bottom of the cliff?
  2. Physics ?#2

    A ball is dropped from the top of a 53.0m high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 25.0m/s The stone and ball collide part way up. How far above the base …
  3. physics

    9. A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 19.6 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 6.7 s. How far out from …
  4. physics

    A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff?
  5. physics

    A stone is thrown horizontally at a speed of 4.8 m/s from the top of a cliff 88.5 m high. How long does it take the stone to reach the bottom of the cliff?
  6. Physics

    Help imediately please very urgent! A stone is dropped from a cliff 200m high,if a second stone is thrown vertically upwards 1.50sec after the first was released,strike the base of the cliff at the same in stant as the first stone,with …
  7. Physics

    A person is standing on the edge of a cliff of height h= 24 m. She throws a stone of mass m=0.2 kg vertically down with speed v0= 10 m/s (stone 1) and another stone of the same mass vertically up at the same speed (stone 2). The gravitational …
  8. physics for physical science

    A stone thrown vertically upwards with a speed of 12m/s from the edge of Cliff 70m high. Calculate the time the stone takes to hit the bottom of the cliff.
  9. physics

    A stone is dropped from the top of a cliff which is 100m high. At the same time another stone is vertically thrown upwards from the foot of the cliff woth a speed of 40m/s.AT what height and when do the stones meet
  10. Physics

    a stone is thrown at an angle of 30 degrees above the horizontal from the top edge of a cliff with an initial speed of 12m/s. a stop watch measures the stone's trajectory time from top of cliff to bottom to be 8s. how far out from …

More Similar Questions

Post a New Question