For Newton's second law, the force is equal to the product between the mass and the acceleration of the rocket:

From which we can rewrite the acceleration as

where m=7.0 kg.
The velocity of the rocket is the derivative of the acceleration:

and if we substitute x=9.0 m, we find the rocket velocity after 9.0 m:
Answer:
A: No because it is nor changing speed or direction
B: Yes because it changes direction even though the speed is constant
Please Give Brainliest
Answer:
12500W
Explanation:
Given parameters:
Work done = 250000J
Time taken = 20s
Unknown:
Power of the crane = ?
Solution:
Power is the defined as the rate at which work is being done;
Mathematically;
Power =
insert the parameters and solve;
Power =
= 12500W