Average speed = (total distance covered) / (time to cover the distance)
Total distance = (80m) + (125m) + (45m) = 250 meters
Overall time = 10 minutes
Average speed = (250 meters) / (10 minutes)
<em>Average speed = 25 meters/minute </em>
Since we're only looking for average speed and not velocity, we don't care about any of the directions, and we don't need to calculate Mary's displacement.
Answer: I think your answer would be true.
Very sad to hear from her
Answer:
car b
Explanation:
b is 2/3 of the way to 30 km an hour so that means its 20
Answer:
6. W = 3 m g h
Explanation:
Displacement in moving from first floor to the fourth floor is 3h, and the total energy consumed in this process is (3.m.g.h) which is equal to the work done.
According to the work-energy equivalence the change in energy of a system is equal to the work done.
Here, change in potential energy:



