A70 kg man rides a ferris wheel with a radius of 10.3 m at a velocity of 5.00 m/s . what is the centripetal force that he experiences, expressed with the correct number of significant figures? the formula for determining centripetal force, in newtons, is f=mv2r .

169 n

169.9 n

170 n

200 n

i don't know if it's 169.9 or 170 and explain

200 N

Explanation:

F = mv²/r

F = (70 kg) (5.00 m/s)² / (10.3 m)

F ≈ 200 N

The man's mass is precise to only 1 significant figure, so you must round the final answer to 1 significant figure.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s