QUIZ#01 PROBLEM SOLVING. Solve the following problems and show your solution and answer at the back of your paper. (identifying the given=1pts, formula=1 pts, solution with correct answer=3pts)
1. Saitama's toy car has the mass of 10kg is moving at a velocity of 20m/s? Compute its kinetic energy?
2. The papaya fruit has the mass of 6kg hanged on its tree with 3m from the ground. What is its potential energy?
3. A backhoe loader carried a sand load of 2000kg with a distance of 10 m in 60 seconds at constant velocity. How much the power of backhoe loader used?
4. In studio, the singer is audible because the temperature is 26°C. What is the speed of sound with the 26°C that makes the singer audible?
5. Compute the speed of sound at temperature of 29°C.
1. Saitama's toy car has the mass of 10kg is moving at a velocity of 20m/s? Compute its kinetic energy?
2. The papaya fruit has the mass of 6kg hanged on its tree with 3m from the ground. What is its potential energy?
3. A backhoe loader carried a sand load of 2000kg with a distance of 10 m in 60 seconds at constant velocity. How much the power of backhoe loader used?
4. In studio, the singer is audible because the temperature is 26°C. What is the speed of sound with the 26°C that makes the singer audible?
5. Compute the speed of sound at temperature of 29°C.
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Problem 1:
Given:
m = 10 kg
v = 20 m/s
Required:
KE
Solution:
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Problem 2:
Given:
m = 6 kg
h = 3 m
Required:
PE
Solution:
PE = mgh
PE = (6 kg)(9.8 m/s²)(3 m)
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Problem 3:
Given:
m = 2,000 kg
d = 10 m
t = 60 s
Required:
P
Solution:
Solving for F
F = weight = mg
F = (2,000 kg)(9.8 m/s²)
F = 19,600 N
Solving for W
W = Fd
W = (19,600 N)(10 m)
W = 196,000 J
Solving for P
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Problem 4:
Given:
T = 26°C
Required:
v
Solution:
v = 331 + 0.6T
v = 331 + 0.6(26)
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Problem 5:
Given:
T = 29°C
Required:
v
Solution:
v = 331 + 0.6T
v = 331 + 0.6(29)