A sprinter accelerates at 7.5 m/s^2 for 3 seconds. what is his change in velocity?
回答 (3)
2020-09-16 1:13 pm
Δ
V = a*Δ
t = 7.5(3-0) = 22.5 m/sec (twice faster than Bolt ^_*)
V = a*Δ
t = 7.5(3-0) = 22.5 m/sec (twice faster than Bolt ^_*)
2020-09-16 12:54 pm
v = u + at
v - u = at
Change in velocity, v - u
= (7.5) (3) m/s
= 22.5 m/s
v - u = at
Change in velocity, v - u
= (7.5) (3) m/s
= 22.5 m/s
2020-09-16 7:26 pm
Applying v = u + at for u = 0, a = 7.5 and t = 3 we get:
v = 0 + 7.5(3) => 22.5 m/s
Some sprinter!!
:)>
v = 0 + 7.5(3) => 22.5 m/s
Some sprinter!!
:)>
收錄日期: 2021-04-24 08:00:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200916042900AACKc3r