Answer:
t = 75.4 s
v = 26.9 m/s
Explanation:
Part1 :
v1 = 0 m/s
v2 = 32 m/s
a = 2 m/s2
The time needed to reach the final speed is:
v2 = v1 + a*t
32 = 0 + 2*t
t = 16 s
Part 2:
constant speed of 32 m/s for 53 s
Part 3:
v2 = 32 m/s
v3 = 0 m/s
t = 5 s
The acceleration is negative because the car is stopping:
v3 = v2 + a*t
0 = 32 + a*5
a = - 6.4 m/s
a) The total time the car is in motion is:
total time = 16 + 53 + 6.4 = 75.4 s
b) For the average speed you can calculate the total distance and divide it by the total time for an easier way
Part 1
d = (32+0)/2 * 16 = 256 m
Part 2
d = 32 * 53 = 1696 m
Part 3
d = (32+0)/2 * 5 = 80 m
Average speed:
v = (256 + 1696 + 80)/75.4 = 26.9 m/s
Answer:
The particle model of matter is one of the most useful scientific models because it describes matter in all three states. Understanding how the particles of matter behave is vital if we hope to understand science!
The model also helps us to understand what happens to the particles when matter changes from one state to another.
The following diagram shows different changes of state, as well as which processes are the reverse of each other. Melting and freezing are the reverse processes of each other and so are evaporation (boiling) and condensation.
Explanation:
The acceleration will remain the same (assuming air resistance is negligible or consistent) however the velocity will change in magnitude.
Answer:
itsgoing to be aroud 36 speed
Explanation:
bc if u think about it it make sence
Explanation:
everything can be found in the picture