Laws Of Motion Question 240

Question: A rocket with a lift- off mass 3.5×104

kg is blasted upwards with an initial acceleration of 10m/s2. Then the initial thrust of the blast is[AIEEE 2003]

Options:

A) 1.75×105N

B) 3.5×105N

C) 7.0×105N

D) 14.0×105N

Show Answer

Answer:

Correct Answer: C

Solution:

Initial thrust must be m[g+a]=3.5×104(10+10)=7×105N



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