Answer:
2m/s²
Explanation:
- V=Vstart+at
- rewrite that to find a so a=(V-Vstart)/t
part A of graph
part B of graph
the average between the two is both answers added divided by the number of answers
- (4m/s²–0m/s²)/2
- 4m/s²/2
- 2m/s²
Answer:

Explanation:
Given:
mass, 
time, 
velocity, 
coefficient of kinetic friction between wheels & pavement, 
According to first condition,



According to second condition,
<u>Magnitude of frictional force (which acts opposite to the direction of motion):</u>

where N is the normal reaction.


Now, the impulsive force on the wall if the brakes were applied during the crash:



Answer:
B. 4 m/s
Explanation:
v=d/t
Running for 300 m at 3 m/s takes 100 seconds and running at 300 m at 6 m/s takes 50 seconds. 100 s + 50 s = 150 s (total time). Total distance is 600 m, so 600 m/ 150 s = 4 m/s.
I’m honestly bored & tiredddd