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anonymous
 4 years ago
A student tosses a 2 kg ball into the air 4 meters above his hand. Ignoring air friction, what will be the magnitude of the velocity of the ball when it returns to his hand?
A 1 m/s
B 2 m/s
C 8 m/s
D 10 m/s
anonymous
 4 years ago
A student tosses a 2 kg ball into the air 4 meters above his hand. Ignoring air friction, what will be the magnitude of the velocity of the ball when it returns to his hand? A 1 m/s B 2 m/s C 8 m/s D 10 m/s

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[v _{f}^{2}=v _{i}^{2}+2a \Delta x\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0but you dont have any velocity

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0hmm but actually I'm getting 8.85 as my answer

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0potential energy = kinetic energy

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0hmm ill try both equations!

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0they give the same answer so I think something is missing.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0wait so it doesnt matter which equation?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0no both give the same result.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0but Im not sure if the answer is correct since 9 isn't listed.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0okay would vf = 0 in @VeritasVosLiberabit

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0vi = 0 you are trying to find vf

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0the answer is supposed to be 8 so i guess thats close right?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0hmm but you dont round downward

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0if it asks for 1 sigfig the answer should be 9.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah im a little iffy about that but i can try asking my teacher that one tomorrow morning!

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0either way the question might be wrong taking g= 9.81... my best answer could be 10 :)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanks you guys! ill ask my teacher to verify it
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