Answer:
A
Explanation:
Begin as protostars, which fire up when they collapse and become denser and hotter.
Speed equals distance divided by time, so 350 divided by 2.5 equals 140 kilometers per hour.
m = mass of the car moving in horizontal circle = 1750 kg
v = Constant speed of the car moving in the horizontal circle = 15 m/s
r = radius of the horizontal circular track traced by the car = 45.0 m
F = magnitude of the centripetal force acting on the car
To move in a circle . centripetal force is required which is given as
F = m v²/r
inserting the above values in the formula
F = (1750) (15)²/(45)
F = (1750) (225)/(45)
F = 1750 x 5
F = 8750 N
T
Answer:
the velocity is a second final to initial velocity of 39
