Answer:
S = 2 π R
R (mean) = 92.9E6 miles
S = 2 * 3.14 * 92.9E6 miles = 5.84E8 miles
A :-) a = v^2 by r
Given - radius = 25 m
velocity = 10 m/s
Solution -
a = v^2 by r
a = ( 10 )^2 by 25
a = 100 by 25
( cut 25 and 100 because 25 x 4 = 100 )
a = 4 m/s^2
.:. The centripetal acceleration of the car
= 4 m/s^2.
Correct answer is D. Earths rotation
Answer:
a) v=23.9 m/s
b) R=2646 N
Explanation:
According to Newton's second law the net force at the top is given by
∑F=-m*ac
according to

∑F=
a).
To lose contact this means that R=0 so the final equation is


Solve to v



b).
v is the twice of part a so



Solve to Rm


