Physics

posted by .

A ball is thrown straight up and passes point B(at a height of 45.6m above its starting point O) in 4.9s

What was its initial speed? The acceleration of gravity is 9.8m/s^2

Answer in units of m/s.



I think the answer is -14.7m/s

but im not sure since you probably cant have negative speed

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A tennis ball is thrown vertically upward with an initial velocity of +7.0 m/s. What will the ball’s velocity be when it returns to its starting point?
  2. Physics

    A tennis ball is thrown vertically upward with an initial velocity of +7.0 m/s. What will the ball’s velocity be when it returns to its starting point?
  3. physics

    A tennis ball is thrown vertically upward with an initial velocity of +7.5 m/s. What will the ball’s velocity be when it returns to its starting point?
  4. physics

    ll is thrown vertically upward with an initial speed of 16 m/s. Then, 0.65 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 27 m/s. How far above the release point will the …
  5. physics

    ll is thrown vertically upward with an initial speed of 16 m/s. Then, 0.65 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 27 m/s. How far above the release point will the …
  6. Physics

    A ball thrown straight up at ground level passes a height of 115.7 m in 5.6 s. The acceleration of gravity is 9.8 m/s^2. What was its initial speed?
  7. Physics

    A ball is thrown vertically upward with an initial speed of 11 m/s . Then, 0.67 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 25 m/s . How far above the release point will …
  8. physics

    A tennis ball is thrown vertically upward with an initial velocity of +7.5 m/s. What will the ball’s velocity be when it returns to its starting point?
  9. physics

    A ball is thrown straight up and reaches a maximum height of 7.16 m. What was its initial speed?
  10. physics

    A ball is thrown vertically upward with an initial speed of 25 m/s. Then, 1.8 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 32.1 m/s . How far above the release point will …

More Similar Questions