A body starts with a velocity 2i - 3j + 11k m/s and moves with an acceleration of 10i +10j + 10k m/s 2 . What is its velocity after 0.25 s?
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42
a=v-u/t
10(i+j+k) = x - ( 2i - 3j + 11k )/2.5
x = 25(i+j+k) -2i +3j -11k ......... 2.5 * 10
= 25i-2i + 25j+3j + 25k+11k
= 23i + 28j + 36j
Q FROM VECTOR ??????
10(i+j+k) = x - ( 2i - 3j + 11k )/2.5
x = 25(i+j+k) -2i +3j -11k ......... 2.5 * 10
= 25i-2i + 25j+3j + 25k+11k
= 23i + 28j + 36j
Q FROM VECTOR ??????
Answered by
30
Explanation:
so this is the correct answer
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