Si units or Systeme' de Internationale' is a widely adopted unit system in measuring basic and derived dimensions In this case, the SI units here are kilograms, meter and seconds. Pounds is an English unit. mass is the measure of <span>how much matter an object contains, hence the answer is A. 43 kg.</span>
Answer:
d = 84 m
Explanation:
As we know that when an object moves with uniform acceleration or deceleration then we can use equation of kinematics to find the distance moved by the object
here we know that
initial speed ![v_i = 42 m/s](https://tex.z-dn.net/?f=v_i%20%3D%2042%20m%2Fs)
final speed ![v_f = 0](https://tex.z-dn.net/?f=v_f%20%3D%200)
time taken by the car to stop
![t = 4s](https://tex.z-dn.net/?f=t%20%3D%204s)
now the distance moved by the car before it stop is given as
![d = \frac{v_f + v_i}{2} \times t](https://tex.z-dn.net/?f=d%20%3D%20%5Cfrac%7Bv_f%20%2B%20v_i%7D%7B2%7D%20%5Ctimes%20t%20)
now we have
![d = \frac{42 + 0}{2} \times 4](https://tex.z-dn.net/?f=d%20%3D%20%5Cfrac%7B42%20%2B%200%7D%7B2%7D%20%5Ctimes%204)
![d = 84 m](https://tex.z-dn.net/?f=d%20%3D%2084%20m)
10.0 force to get 2000j to move a box in 8s.
A would be the answer
Suspension cables
C: if it senses unequal currents