Question

thrust force its engines must provide during this acceleration is closest toA 10,000-kg rocket blasts off from earth with a uniform upward acceleration of 2.00 m/s2 and feels no air resistance. The upward thrust force its engines must provide during this acceleration is closest to:
a. 118,000 N.
b. 78,000 N.
c. 980,000 N.
d. 20,000 N.

Answer 1

Answer:

A.

Explanation:

To solve this exercise we use the concept given in Newton's second Law in which it is specified that

$F = ma$

Where,

F = Force

m = mass

a = Acceleration

In the given problem the rocket blast off from earth with a uniform upward acceleration of $2m / s ^ 2$

Taking into account that on earth the force of gravity also acts, which has a value of $9.8m / s ^2$, we have to

$F= m (a+g)$

$F = 10000(2+9.8)$

$F = 118000N$

Therefore the correct answer is A.