- Height=h=102m
- Mass=m=120g
- Acceleration due to gravity=g=10m/s^2
- P E means potential energy
Robert Hooke was a famous scientist who experimented with springs (metal coils). He found that the farther you stretched the spr
2 answers:
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Answer:
a)
b)
Explanation:
First we convert our minutes to hours so we work always in the same units.
Where we used the fact that 1 hour are 60 min, thus the multiplying factor is equal to 1 (not altering the time, just changing the units).
a) On the first part the motorist travels a distance , and on the second part he travels
.
The total displacement is
b) The average velocity is the relation between the total displacement and the time taken to cover it. Our total time is t=0.6h+0.25h+2.2h=3.05h, thus we have: