<span>Answer:
K = (1/2) mv² + (1/2) Iω², where m is the ball mass, I is the ball's moment of inertia (2/5)mr², and ω is the angular velocity of the ball. Because the ball rolls without slipping, it is easy to see that v=ωr, or r=v/ω. Then,
K = (1/2)mv² + (1/2)(2/5)mr²ω²
= (1/2)mv² + (1/5)mv²
= (7/10)mv²
Setting potential at the top equal to kinetic at the bottom,
mgh=(7/10)mv²
v=âš{(10/7)(gh)}
= [(10/7)(9.8)(0.51)]^(1/2) = 2.672m/s</span>
Answer:
6 miles
Step-by-step explanation:
miles : minutes
1 : 10
x : 60
60/10=6
x must equal 6
Answer:
i think it is a because it makes sense and also you wouldnt
Step-by-step explanation:
Answer:
d 64
Step-by-step explanation:
f(-3)=1/2 ^-6=2^6=64
5 * 6 = 30
90/3 = 30
5 * 6 = 90/3 = 30