The answer is C..........
Your answer is c holding a brick doesn't contain movement, but energy to grip on it.
hoped it helped!!!
Answer:

Explanation:
Acceleration, 
Where v and u are the final and initial velocities of the race car respectively, t is the time taken for the race car to attain velocity of 36 m/s.
Substituting 36 m/s for v, 28 m/s for u and 2 s for t then

Answer:
11.6 s
Explanation:
We can use equation of motiom to solve this

Let Mass be m
If its doubled then

Hence force also needs to be doubled.