Answer:
The acceleration of rocket B is -17.4 m/s².
Step-by-step explanation:
Given that,
Initial velocity of rocket A = 6500 m/s
Final velocity of rocket B = 8700 m/s
Acceleration of rocket A = -13 m/s²
Displacement of both rocket is zero.
We need to calculate the time of rocket A
Using equation of motion

Put the value into the formula


We need to calculate the acceleration of rocket B
Using equation of motion

Put the value in the formula



Hence, The acceleration of rocket B is -17.4 m/s².