Answer:
Average speed of the car is 54.55 miles/hour
Explanation:
The average speed of an object is the total distance traveled by the
object divided by the time taken to cover this distance
Speed is a scalar quantity which means it is defined only by magnitude
Average speed = total distance ÷ total time
A car traveled 300 miles in 5.5 hours
We need to find the average speed of the car
The average speed of the car = the distance traveled ÷ the time taken
for this distance
The distance is 300 miles
The time taken is 5.5 hours
Average speed = miles/hour
<em>Average speed of the car is 54.55 miles/hour</em>
Answer:
4.68227 °C
Explanation:
= Mass of object = 500 kg
= Mass of water = 25 kg
c = Specific heat of water at 20°C = 4186 J/kg°C
h = Height from which the object falls = 100 m
g = Acceleration due to gravity = 9.8 m/s²
The potential energy and heat will balance each other
The temperature change in the water is 4.68227 °C
Answer:
acceleration of person = 9.77 m/s²
Explanation:
given data
latitude = 40 degree
to find out
Calculate the acceleration of a person
solution
we know that here 40 degree = 0.698 rad
so
acceleration of person = g - ω²R ...............1
and 1 rotation complete in 24 hours = 360 degree
here g is 9.81
so we know Earth angular speed ω = 7.27 × rad/s and R is earth radius that is 6.37 ×
m
so
put here value in equation 1 we get
acceleration of person = g - ω²R
acceleration of person = 9.81 - (7.27 × )² × 6.37 ×
acceleration of person = 9.77 m/s²