please include how did you arrive to your answer
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Carl started to run at 10 km/h when he left his house. He arrived at school 30 minutes later. How fast was he running when he arrived there? Assume that his average acceleration was 30 km/h2. the answer is 25 km/h but i dont know how u can find it
http://library.thinkquest.org/10796/ch3/…
section 2 third question.
Answer .
. He arrived at school 30 minutes later means “he has traveled for 30 minutes, half an hour”
At first glace I mistook the sentence as if he is late by half an hour to school.
Initial velocity = 10 km /h
acceleration = 30 km/h^2
final velocity = initial velocity + at = 10 + 30* (1/2) = 25 m/s
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http://library.thinkquest.org/10796/ch3/…
section 2 third question.
Answer .
. He arrived at school 30 minutes later means “he has traveled for 30 minutes, half an hour”
At first glace I mistook the sentence as if he is late by half an hour to school.
Initial velocity = 10 km /h
acceleration = 30 km/h^2
final velocity = initial velocity + at = 10 + 30* (1/2) = 25 m/s
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