Answer :
The linear velocity of Sanjay and Ting is 0.98 m/s. Linear velocity is a measure of how fast an object is moving in a straight line.
How to find linear velocity ?
To find the linear velocity of Sanjay and Ting, we can use the formula:
Linear velocity = Angular velocity * Radius
The angular velocity of the merry-go-round is 21 rpm, or 21 * 2 * pi / 60 = 0.7 rad/s.
The radius of the merry-go-round is 1.75 m,
which is the radius of the playground merry-go-round minus the distance that Sanjay and Ting walk inwards (1.75 m - 0.35 m = 1.4 m).
So the linear velocity of Sanjay and Ting is 0.7 rad/s * 1.4 m = 0.98 m/s.
It's important to note that this linear velocity is relative to the merry-go-round itself, not the ground. To find the linear velocity relative to the ground, we would need to take into account the rotation of the merry-go-round.
To learn more about angular velocity refer :
https://brainly.com/question/20432894
#SPJ4