A running back with a mass of 70 kg travels down the field with a velocity of 5.0 m s . Calculate the kinetic energy of the foot
2 answers:
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Answer:
Case I: 12.617 L/s
Case II: 161.406 cubic meters per hour
Case III: 1.062 Pound inches
Explanation:
<u>Given:</u>
- Speed of water flow = 200 gallons per minute
- Speed of air blow = 95 cubic feet per minute
- Measure of Torque = 12 Newton centimeter
<u>Assumptions:</u>
- 1 US gallon = 3.785 L
- 1 min = 60 s
- 1 ft = 0.3048 m
- 1 h = 60 min
- 1 inch = 2.54 cm
- 1 N = 0.2248 lb
Case I:
Case II:
Case III:
Answer:
33.7410805301 s
22336.5953109 m
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity =
s = Displacement
a = Acceleration =
g = Acceleration due to gravity = 9.81 m/s²
The time taken is 33.7410805301 s
The plane would travel 22336.5953109 m
Answer:
-2000 N
Explanation:
To solve the problem, we can use the impulse theorem, which states that the impulse is equal to the change in momentum of the car:
where
F is the average breaking force
is the stopping time
m = 1000 kg is the mass of the car
is the change in velocity of the car
Solving the equation for F,