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

natasha.aries
 2 years ago
Best ResponseYou've already chosen the best response.0but you dont have any velocity

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

cesckay
 2 years ago
Best ResponseYou've already chosen the best response.1potential energy = kinetic energy

natasha.aries
 2 years ago
Best ResponseYou've already chosen the best response.0hmm ill try both equations!

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

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

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

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

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

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

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

natasha.aries
 2 years ago
Best ResponseYou've already chosen the best response.0oh hah yeah my bad

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

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

natasha.aries
 2 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!

cesckay
 2 years ago
Best ResponseYou've already chosen the best response.1either way the question might be wrong taking g= 9.81... my best answer could be 10 :)

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

VeritasVosLiberabit
 2 years ago
Best ResponseYou've already chosen the best response.0you're welcome.
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