# Homework Help: 3 balls are launched off a tall cliff with the same initial velocity

1. Oct 31, 2009

### vijaym801

which will strike the ball at the fastest speed?
-one launched upward at a certain angel
-one launched downward
-one launched perfectly horizontally

I am guessing 1, since it has the additional height to fall under gravity influence

2. Oct 31, 2009

### Fightfish

What ball and where is it?

3. Oct 31, 2009

### vijaym801

One of the balls is launched horizontally from a cliff.
One of the balls is launched downward from a cliff.
One of the balls is launched upward from a cliff.

4. Oct 31, 2009

### Fightfish

Yea, three balls are launched...but you are asking which ball would "strike the ball at the fastest speed"? Clearly there is another ball/target that these three balls are aimed at?

5. Oct 31, 2009

### vijaym801

Which has the highest speed right before hitting the ground

6. Oct 31, 2009

### vijaym801

i misstyped. it should be which of these 3 balls strikes the ground with the greatest speed.

7. Oct 31, 2009

### Fightfish

Instead of guessing, why not try writing out the kinematic equations for each scenario. (You will get a most interesting result)

8. Oct 31, 2009

### vijaym801

i misstyped. it should be which of these 3 balls strikes the ground with the greatest speed.