Answer:
29.75 revolutions
Explanation:
The kinematic formula for distance, given a uniform acceleration a and an initial velocity v₀, is

This car is starting from rest, so v₀ = 0 m/s. Additionally, we have a = 9.2/9.7 m/s² and t = 9.7 s. Plugging these values into our equation:

So, the car has travelled 44.62 m in 9.7 seconds - we want to know how many of the tire's <em>circumferences</em> fit into that distance, so we'll first have to calculate that circumference. The formula for the circumference of a circle given its diameter is
, which in this case is 47.8π cm, or, using π ≈ 3.14, 47.8(3.14) = 150.092 cm.
Before we divide the distance travelled by the circumference, we need to make sure we're using the same units. 1 m = 100 cm, so 105.092 cm ≈ 1.5 m. Dividing 44.62 m by this value, we find the number of revs is
revolutions
<span>Car B has a greater momentum than car A.
Since, momentum = mass * velocity
mass of both car A and B is same, velocity of B is greater than A.
So, momentum of car B = 1200 * 25 = 30,000 kg-km/h is greater than </span>momentum of car A = 1200 * 22 = 26400 kg-km/h
Answer:
Try to be their friend
Explanation:
Ask what sports they like
Connect to them
Tell them embarrassing stories that happened to you
Always say that everything will be okay
Fahrenheit = 85.6°F
Celsius = (5/9) (Fahrenheit - 32)
Celsius = (5/9) (85.6 - 32)
Celsius = (5/9) (53.6)
<em>Celsius = 29.78°C</em>
Kelvin = Celsius + 273.15
Kelvin = 29.78 + 273.15
<em>Kelvin = 302.93K </em>