physics

posted by .

An inquisitive physics student and mountain climber climbs a 50.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.08 m/s downward.

(a) How long after release of the first stone do the two stones hit the water?

(b) What initial velocity must the second stone have if they are to hit simultaneously?
2 m/s (downward)

(c) What is the speed of each stone at the instant the two hit the water?
--first stone? (downward)
--the second stone? (downward)

  • physics -

    I'd say they would never hit the water at the same time because the first stone had a initial DOWNWARD velocity of 2.08 m/s. The second stone lost one second plus it started at zero vertical velocity.

    If the situation is reversed, if the second stone is given an initial downward velocity of 2.08 m/s, there is a chance they may hit the water together.
    (1)
    Using
    S=vertical distance travelled, m
    t = time in seconds since release of first stone.
    S = 0*t+(1/2)(-g)t² = 2.08*(t-1)+(1/2)(-g)(t-1)²
    Solve for t

    (2)
    v(first) = 0+(-g)*t
    v(second) = 2.08+(-g)*(t-1)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    Hi guys, need help with this problem for physics and im having trouble visualizing it. Kathy and mountain climber climbs a 55.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and …
  2. Physics

    At t = 0, a stone is dropped from a cliff above a lake; 2.0 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff.
  3. physics

    At t = 0, a stone is dropped from a cliff above a lake; 2.1 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff
  4. Physics 1

    At t = 0, a stone is dropped from a cliff above a lake; 1.3 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff. …
  5. physics

    . An inquisitive physics student and mountain climber climbs a 50.0-m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone …
  6. Physics

    Two stones are dropped from the edge of a 60-m cliff, the seconds stone 1.6s after the first. How far below the top of the cliff is the second stone when the separation between the two stones is 36 m?
  7. physics

    A rock climber stands on top of a 56m -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0s apart and observes that they cause a single splash. The initial speed of the first stone was 2.5(m/s) How …
  8. Physics

    Two students are on a balcony 22 m above the street. One student throws a ball vertically downward at 15.5 m/s; at the same instant, the other student throws a ball vertically up- ward at the same speed. The second ball just misses …
  9. physics

    An inquisitive physics student and mountain climber climbs a 50.0m high cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone …
  10. PHYSICS

    A stone is dropped from the top of a cliff and one second latter a second stone is thrown vertically downward with a velocity of 20m/s. How far below the top of the cliff will the stone overtake the first?

More Similar Questions