Answer:
three balls have the same speed
Explanation:
In a parabolic motion we have that

but the time just before the balls hit the ground is

Hence we have
ball A

ball B

ball C

Hence, all three balls have the same speed just before hit the groug
vA=vB=vC
I hope this is useful for you
regards
Answer:
O a force that opposes motion
Answer:
v = √(10gh/7)
Explanation:
Initial gravitational energy = final rotational energy + kinetic energy
PE = RE + KE
mgh = ½ Iω² + ½ mv²
For a solid sphere, I = ⅖ mr².
For rolling without slipping, ω = v/r.
mgh = ½ (⅖ mr²) (v/r)² + ½ mv²
mgh = ⅕ mv² + ½ mv²
mgh = 7/10 mv²
10/7 gh = v²
v = √(10gh/7)
AnswerThe current through a toaster connected to a 120-V source is 8.0 A. What power is given off by the toaster? p= 8.0 A : 120V (p=960 W Page 2 7. The resistance of an electric stove eleinent at operating temperature is 11 12.
Explanation:
hope this helps =)