A space craft flying in a straight course with a velocity of 75km/s fires its rocket motors for 6s.At the end of this time ,its speed is 120km/s in the same direction. Find the distance travelled by the space craft in the first 10s after the rocket motors were started ,the motors having been in action for only 6s.
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Given that:u=75 km/s,v=120 km/s and t=6 seconds
v=u+at
120=75+6a
a=7.5 m/s2
v2-u2=2as
1202-752=2*7.5*s1
s1=585 km
s2=480 km
The distance travelled=1065 km
Given that:u=75 km/s,v=120 km/s and t=6 seconds
v=u+at
120=75+6a
a=7.5 m/s2
v2-u2=2as
1202-752=2*7.5*s1
s1=585 km
s2=480 km
The distance travelled=1065 km
vijaykp2007:
how are you getting s2?
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