Answer:
a)10.08 m/s
b)3.36 m/s
Explanation:
Given that
distance s₁= 160 m
time t₁= 17 s
distance s₂= 80 m
time t₂ = 6.8 s
As we know that
Total distance = Total time x Average speed
s₁ + s₂ = (t₁ + t₂ ) Vavg
Vavg=10.08 m/s
Total displacement = Total time x Average velocity
s₁ - s₂ = (t₁ + t₂ ) Vavg
Vavg=3.36 m/s
a)10.08 m/s
b)3.36 m/s
Answer: e. 37
Explanation:
When two vectors are added, the maximum and minimum posible values, happen when both vectors are aligned each other.
If both vectors aim in the same direction, the maximum value is just the arithmetic sum of their lengths, in this case, 60.
If they aim in opposite direction, the resultant is the substraction of their magnitudes, which yields 20.
Any other posible value (depending on the angle between vectors, which can span from 0º to 180º) must be between those values.
So, the only choice that fits within this interval, is 37.
I do believe it is the third choice
I believe that says that the car is going 125 meter per 5 seconds