Answer:
11 m/s
Step-by-step explanation:
In converting from mph to m/s, the appropriate conversion factor must be used which in this case is 0.44704 m/s.
Thus;
If 1mph = 0.44704 m/s
Then 25 mph = 25 × 0.44704 m/s = 11.176 m/s
Answer:
2.9 mi
Step-by-step explanation:
The time difference t between 12.30pm and 3.30pm is 3h.
Let the distance to Marat's house be s.
The equation to calculate velocity v is given by:
v = distance / time.
Now you can write an equation for the time difference t and use the two velocities and the 90 min(= 1.5h) she stays:
3 = s/12 + 1.5 + s/2.3
Solve this equation for s:
(1/12 + 10/23)* s = 1.5
s = 2.9
