Answer:
7.5 m/s^2
Explanation:
I hope my answer helps u.
Show the graph. I need to see the graph first in order to get the awnser
Answer:
Mechanical energy
Explanation:
If an object does not have any momentum, then it doesn't have mechicanl energy.
The average speed will be:
Total distance travelled divided by time taken
Total distance (in metres)= 80+125+45=250
Total time (minutes) =10
250/10
=25
Thus Mary's average speed is 25 metres per minute.