Question

PLEASEE help with attached:
How do I complete the table shown on the second picture?

Answer 1

Activity 1 is the first picture

Answer 2

what is the velocity of projection???

Answer 3

Does that help?

Answer 4

yep

Answer 5

do u know the equations of motion??

Answer 6

What do you mean?

Answer 7

okay leave it

Answer 8

Ok

Answer 9

time taken to reach the maximum height t = u/g

Answer 10

on earth surface , t = 24/32
=3/4 second

Answer 11

So it's like \[v=\frac{ d }{ t }\]Where d is distance and t is time?

Answer 12

no do u know the formula
V = U + gt

Answer 13

No

Answer 14

u r of which standard??

Answer 15

?

Answer 16

class of study?

Answer 17

8th grade?

Answer 18

do u know about displacement,velocity,acceleration etc

Answer 19

Yes

Answer 20

okay so now u learn this formula
V= U + at
V= final velocity of the body
U= initial velocity of the body
a = acceleration
t = time

Answer 21

Ok

Answer 22

now ur first question
maximum height of the ball

Answer 23

at maximum heicht,
final velocity is zero

Answer 24

Ok

Answer 25

so,
0=U+at
t = -U/a

Answer 26

here acceleration is nothing but acceleration due to gravity

Answer 27

when a body is projected vertically upwards acceleation due to gravity is taken negetive

Answer 28

so finally t =U/g

Answer 29

What do you mean acceleration is nothing?

Answer 30

acceleration is equal to acceleration due to gravity in this case

Answer 31

Ok

Answer 32

so finally time required to reach maximum height t = U/g
= 24/32
=3/4 second

Answer 33

Ok

Answer 34

so u can do this on remaining planets

Answer 35

So Mercury would be 2 seconds right

Answer 36

2.02

Answer 37

next maximum height reached by the ball

Answer 38

.85 seconds

Answer 39

for what?

Answer 40

Venus

Answer 41

correct

Answer 42

Ok

Answer 43

do the remaining later
lt's go for the next question

Answer 44

Ok

Answer 45

Wait how do you find the maximum height?

Answer 46

for maximum height reached substitute t = U/g in h(t)

Answer 47

You said it was t = -U/a?

Answer 48

So I substitute the time required to reach maximum height into the quadratic functions?

Answer 49

ya

Answer 50

Ok

Answer 51

u will get h(t) = U^2/2g + ho

Answer 52

Ok

Answer 53

So the answer to the first one would be 27 ft right

Answer 54

now on earth surface,
h = (24)^2/2(32) +3
= 12

Answer 55

ya right 27.32

Answer 56

Ok

Answer 57

now u can do the remaining
let's move to the next question

Answer 58

Ok

Answer 59

time required to return to planet's surface

Answer 60

if the ball is projected from the ground
time taken to reach the maximum height = time taken to reach the ground from maximum height

Answer 61

Ok

Answer 62

So it's the same answer?

Answer 63

no

Answer 64

wait this is some what lengthy

Answer 65

now, time taken by the ball to reach the hand of the person is,
U/g + U/g = 2U/g

Answer 66

Ok

Answer 67

but the ball should reach the ground

Answer 68

there one more property that,
if a ball is projected vertically up with certain velocity ,the ball acquire the same velocity when it reaches the original position

Answer 69

so it reaches the hands of the person with a velocity of 24 feet per second

Answer 70

now it should reach the ground by traveling 3 feet

Answer 71

So 27 feet

Answer 72

no how do u say that?

Answer 73

u der?

Answer 74

Yes

Answer 75

now h(t) = (1/2)g(t^2) + Ut
3 = 16t^2 + 24t

Answer 76

t = 0.116 seconds

Answer 77

now add this with 2U/g

Answer 78

hope u understood

Answer 79

There's a negative in front of (1/2)g
And how did you get 3?

Answer 80

that is given because there the ball is projected vertically upward
here the ball is coming down

Answer 81

it should travel 3 feet downward to reach the ground

Answer 82

\[h(t)=-\frac{ 1 }{ 2 }g t ^{2}+v _{0}t +h _{0}\]
So you got the 3 from Earth's quadratic function right?

Answer 83

ya

Answer 84

So does that mean they all travel 3 feet downward?

Answer 85

no

Answer 86

but the ho for each of them is 3

Answer 87

the ball should travel 3 feet downward after it reaches the hands of the person ,to reach the ground

Answer 88

So how long do the other ones travel?

Answer 89

same 3 feet

Answer 90

So the other ones travel 3 feet downward?