- #1

Kaneki

- 12

- 0

## Homework Statement

Im sorry to annoy anyone with this, i know to smart people these two are easy but I am dumb and i honestly don't understand this. If anyone can tell me and explain this concept then ill be very grateful. I have two days to learn and understand this and i don't know where else to go. So, if anyone can, please explain and direct me to where else i should try to understand this. Thank you so much

1 )With a mass of 114 kg Baby Bird is the smallest monoplane ever flown. Suppose the Baby Bird and pilot are coasting along the runway when the pilot jumps horizontally to the runway behind the plane. The pilot’s velocity upon leaving the plane is 5.32 m/s backward. After the pilot jumps from the plane, the plane coasts forward with a speed of 3.40 m/s. If the pilot’s mass equals 60.0 kg, what is the initial velocity of the plane and pilot before the pilot jumps?

2) The largest frog ever found was discovered in Cameroon in 1989. The

frog’s mass was nearly 3.6 kg. Suppose this frog is placed on a skateboard

with a mass of 3.0 kg. The frog jumps horizontally off the skateboard to

the right, and the skateboard rolls freely in the opposite direction with a

speed of 2.0 m/s relative to the ground. If the frog and skateboard are initially

at rest, what is the initial horizontal velocity of the frog?

## Homework Equations

I think M1*V1 + M2*V2 = M1*V1 + M2*V2 and M1*V1 + M2*V2 = (M1*M2

)V2

## The Attempt at a Solution

1). (60 + 114) = (114 * 5.32 + 60 * 3.40 )

174 606.48 + 204 = 810.48/174 = 6.5m/s

2.) 3.6 (2.0) + 3.0(0)

7.2 + 0

3.0 + 3.6 + 6.6, 7.2/6.6 = 1.0m/s