Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A spaceship launched vertically up from Mars has reached a height of 320 m and a velocity of 80 m/s at time t = 0. At this instant its controls are switched off. It continues to move up under the influence of Martian gravity (i.e. 3.72 m/s2). At the same instant another spaceship at height 1500 m is moving downward at 25 m/s and slowing down at rate of0.8 m/s2.
(i) The two space ships will be at same height of other time t =?
A
19 sec 3 km 
B
27.4 sec 18 km 
C
50 sec 1.14 km 
D
Will reach at same height only once (ii) How high above the planet surface will the first meeting take place? 5.14 km (iii) Which of the graph best explains the motion? 
Text Solution
Verified by ExpertsThe correct answer is:
27.4
Ans.
(i)
Sol. 27.4 sec
(ii)
Sol. 1.14 km
(iii)
Sol. 
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