Question
Question: A particle is projected with a velocity 15 km s<sup>-1</sup>. Find its velocity in the space far off...
A particle is projected with a velocity 15 km s-1. Find its velocity in the space far off from the earth.
A
3.8 km s-1
B
7.6 km s-1
C
10 km s-1
D
11.2 km s-1
Answer
10 km s-1
Explanation
Solution
vf2= vi2 – ve2 = 152 - (11.2)2 or vf = 10 kms-1.