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Hi all,

I came across few questions in motion.Can anyone can help me out in this.

Q1)A body moving with a constant acceleration travels the distances 3m and 7m respectively in the first and third seconds. Calculate :

(i)initial velocity

(ii)the acceleration of body

Q2)A spacecraft flying in a straight course at 75 km/sec fires its rocket motors for 6 seconds. At the end of this time its speed is 120 km/sec in the same direction. Find :

(i)the spacecrafts average acceleration while the motors were firing.

(ii)the distance travelled the spacecraft in the first 10 seconds after the rocket motors were started, the motors having been in action for only 6 seconds.

I came across few questions in motion.Can anyone can help me out in this.

Q1)A body moving with a constant acceleration travels the distances 3m and 7m respectively in the first and third seconds. Calculate :

(i)initial velocity

(ii)the acceleration of body

Q2)A spacecraft flying in a straight course at 75 km/sec fires its rocket motors for 6 seconds. At the end of this time its speed is 120 km/sec in the same direction. Find :

(i)the spacecrafts average acceleration while the motors were firing.

(ii)the distance travelled the spacecraft in the first 10 seconds after the rocket motors were started, the motors having been in action for only 6 seconds.

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