Aroller coaster begins at the top of a hill. if it accelerates at the rate of 2 m/s2 and has a mass of 2000 kg, what net force is acting on it? (f=ma) a. 0.001 n b.0.5 n c. 4000 n d. 1000 n

C. 4000 N

By using the formula F=ma we have:

a = 2m/s^2 and m = 2000 kg and so,

F=(2000kg)(2m/s^2)= 4000 N

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the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm