Answer:
605 km
Explanation:
Hello
the same units of measure should be used, then
Step 1
convert 42 m/s ⇒ km/h
1 km =1000 m
1 h = 36000 sec


Step 2
find kilometers traveled after 4 hours

V,velocity
s, distance traveled
t. time
now, isolating s

and replacing

S=604.8 Km
Have a great day
As light travels through a medium, it moves in a straight line path,but when light passes from one medium into another medium, the light path bends,Refraction takes place.
Answer:
The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.
Acceleration because it is at a rise in speed. The formula for acceleration is Speed/Time.