# Physics

Two children are playing on two trampolines. The first child can bounce 1.6 times higher than the second child. The initial speed up of the second child is 5.2 m/s.
(a) Find the maximum height the second child reaches.
(b) What is the initial speed of the first child?
(c) How long was the first child in the air?

1. 👍 0
2. 👎 0
3. 👁 1,083
1. Yo= 0m
h=?
A=g=9.8m/s^2
Child A:
Voa= ?
Ya= 1.6h
Ta= ?
Child B:
Vob= 5.2 m/s
Yb= h
a) Vob^2 = 2AYb
Yb= Vob/2A
h= (5.2 m/s)^2/(2(9.8m/s^2))
h= 1.37m

b) Voa=?
Voa^2=2AYa
Voa= sqrt(2AYa)
Voa= sqrt(2(9.8m/s^2)(1.6(1.37)))
Voa= 6.55m/s

c) sorry but i can't figure out how to do c

1. 👍 1
2. 👎 1

## Similar Questions

1. ### Probability

We are given the following statistics about the number of children in the families of a small village. There are 100 families: 10 families have no children, 40 families have 1 child each, 30 families have 2 children each, 10

2. ### math

A bouncy ball is dropped such that the height of its first bounce is 2.5 feet and each successive bounce is 76% of the previous bounce's height. What would be the height of the 6th bounce of the ball? Round to the nearest tenth

3. ### Physics

A child bounces in a harness suspended from a door frame by three elastic bands. (a) If each elastic band stretches 0.210 m while supporting a 7.35-kg child, what is the force constant for each elastic band? 114.33 N/m (b) What is

4. ### Statistics

Achusband and wife with brown eyes who have 0.75 probability of having children with brown eyes, 0.125 probability of having children with blue eyes, and 0.125 probability of having children with green eyes. (a) What is the

1. ### PRECALC HELP!!

Two children are playing on the seesaw. THe lighter child is 9 feet from the fulcrum, and the heavier child is 6 feet from the fulcrum. As the lighter child goes from the ground to the highest point, she travels through an angle

2. ### Supportive learning environment

Which of the following statements is true regarding children living in poverty? A. You're more likely to be a child living in poverty if you're American Indian or African American. B. Children living in poverty tend to have more

3. ### algebra

A bouncy ball is dropped such that the height of its first bounce is 4 feet and each successive bounce is 79% of the previous bounce's height. What would be the height of the 11th bounce of the ball? Round to the nearest tenth (if

At the beach, 3 children pull on a floating toy. Child 1 plus with a force of 15N [N 24°E], child 2 pulls south and child 3 pulls west. The net force of the toy is zero. Assume that there are no other significant forces acting on

1. ### math

There are 10 children (aged 1 to 10 years) who have equal amounts of money. In the first transaction the eldest child gives one rupee to every child younger to him. In the second transaction, the second eldest child gives one

2. ### Supportive learning environment

Which of the following activities most closely fits with the definition of play described in the textbook? A. The children are divided into small groups, and each child is given finger paint to create a picture. B. Children rotate

3. ### probability

PROBLEM 7: SAMPLING FAMILIES (3 points possible) We are given the following statistics about the number of children in the families of a small village. There are 100 families: 10 families have no children, 40 families have 1 child

4. ### maths

there are 7 children standing in a line ,not all of whom have the same number of cakes with them, if the first child distributes his cakes to the remaining six children such that he doubles their respective no.of cakes ,then he