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20 Nov 2019
A girl swings on aplayground swing in such
a way that at her highest point she is 2.1 m
from the ground, while at her lowest point she
is 0.7 m from the ground.
The acceleration of gravity is 9.8 m/s2 .
What is her maximum speed? Answer in units ofm/s.Part2: please show work Given: In thefollowing choices, htop is the
height of the highest point and hbot is the
height of the lowest point.
At what height above the ground will the
girl be moving at a speed half of her maximum
speed?
1. h1/2 =3/4htop
2. h1/2 =1/4(3 htop + hbot)
3. h1/2 =(1/(2^1/2)) htop
4. h1/2 =(1/(2^1/2))[htop + ((2^1/2) â 1) hbot]
5. h1/2 =1/4htop
6. h1/2 =1/2(htop + hbot)
7. h1/2 =1/2(htop
8. h1/2 = hbot
9. h1/2 =1/4(htop + hbot)
10. h1/2 = htop
A girl swings on aplayground swing in such
a way that at her highest point she is 2.1 m
from the ground, while at her lowest point she
is 0.7 m from the ground.
The acceleration of gravity is 9.8 m/s2 .
a way that at her highest point she is 2.1 m
from the ground, while at her lowest point she
is 0.7 m from the ground.
The acceleration of gravity is 9.8 m/s2 .
What is her maximum speed? Answer in units ofm/s.
Part2: please show work
Given: In thefollowing choices, htop is the
height of the highest point and hbot is the
height of the lowest point.
At what height above the ground will the
girl be moving at a speed half of her maximum
speed?
1. h1/2 =3/4htop
2. h1/2 =1/4(3 htop + hbot)
3. h1/2 =(1/(2^1/2)) htop
4. h1/2 =(1/(2^1/2))[htop + ((2^1/2) â 1) hbot]
5. h1/2 =1/4htop
6. h1/2 =1/2(htop + hbot)
7. h1/2 =1/2(htop
8. h1/2 = hbot
9. h1/2 =1/4(htop + hbot)
10. h1/2 = htop
height of the highest point and hbot is the
height of the lowest point.
At what height above the ground will the
girl be moving at a speed half of her maximum
speed?
1. h1/2 =3/4htop
2. h1/2 =1/4(3 htop + hbot)
3. h1/2 =(1/(2^1/2)) htop
4. h1/2 =(1/(2^1/2))[htop + ((2^1/2) â 1) hbot]
5. h1/2 =1/4htop
6. h1/2 =1/2(htop + hbot)
7. h1/2 =1/2(htop
8. h1/2 = hbot
9. h1/2 =1/4(htop + hbot)
10. h1/2 = htop
Sixta KovacekLv2
10 Jun 2019