A chemical change because it doesn't power anything or secrete anything except smoke.
B.The shorter a wire is, the higher the resistance will be
Answer:
The Correct Answer is Heat of Combustion
Explanation:
Using F=m(v-u) /t
where f=ma
Ma = m(v-u)/t
a = (v-u) /t
a= (-0.4-0.6)/0.2
a= -1/0.2 = -5ms-² (it's decelerating)
