# physics

posted by .

A pelican flying along a horizontal path drops
a fish from a height of 4.7 m. The fish travels
7.7 m horizontally before it hits the water
below.
What was the pelican’s initial speed? The
acceleration of gravity is 9.81 m/s2 .

• physics -

d = Vo*t + 0.5g*t^2 = 4.7 m.
0 + 4.9t^2 = 4.7
t^2 = 0.9592
Tf = 0.98 s. = Fall time.

Dx = Xo * Tf = 7.7 m.
Xo * 0.98 = 7.7
Xo = 7.86 m/s. = Initial hor. speed.

## Similar Questions

1. ### physics

A pelican flying along a horizontal path drops a fish from a height of 5.4m. The fish travels 8.0 m horizontally before it hits the water below. What was the pelican's speed?
2. ### physics

A pelican flying along a horizontal path drops a fish from a height of 5.0 m. The fish travels 8.5 m horizontally before it hits the water below. The acceleration of gravity is 9.81 m/s2 . a) What was the pelican’s initial speed?
3. ### physics

A pelican flying along a horizontal path drops a fish from a height of 5.0 m. The fish travels 8.5 m horizontally before it hits the water below. The acceleration of gravity is 9.81 m/s2 . a) What was the pelican’s initial speed?
4. ### Physics

A pelican flying along a horizontal path drops a fish from a height of 4.7 m. The fish travels 8.5 m horizontally before it hits the water below. What was the pelican’s initial speed?
5. ### physics

a pelican flying a horizontal path drops a fish from a height of 5.0m. the fish travels 8.1m horizontaly before it hits the water below. what was the pelicans initial speed?
6. ### physics

A pelican flying along a horizontal path drops a fish from a height of 5.1 m. The fish travels 6.1 m horizontally before it hits the water below. What was the pelican’s initial speed?
7. ### physics

A pelican flying along a horizontal path drops a fish from a height of 4.7 m. The fish travels 7.7 m horizontally before it hits the water below. What was the pelican’s initial speed?
8. ### physics

A pelican flying along a horizontal path drops a fish from a height of 3.1 m. The fish travels 8.4 m horizontally before it hits the water below. What was the pelican’s initial speed?
9. ### physics

A pelican flying along a horizontal path drops a fish from a height of 3.3 m. The fish travels 7.6 m horizontally before it hits the water below. What was the pelican’s initial speed?
10. ### Physics

A pelican flying along a horizontal path drops a fish from a height of 3.3 m. The fish travels 8.2 m horizontally before it hits the water below. What was the pelican's initial speed?

More Similar Questions