Four boxes are sliding with constant speed before each box experiences and unbalanced force of 8 N. Which box would experience t
1 answer:
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Answer:
The amount of kinetic energy lost during the collision is 60.75 J
Explanation:
The given parameters are;
The mass of the object moving in the +x direction, m₁ = 1.00 kg
The velocity of the object moving in the +x direction, v₁ = 10.0 m/s
The mass of the object moving in the -x direction, m₂ = 1.50 kg
The velocity of the object moving in the +x direction, v₂ = 5.00 m/s
The final velocity of the 1.00 kg mass after collision, v₃ = 4.00 m/s
The direction of motion of the 1.00 kg mass after collision = -x direction
The total initial kinetic energy of the system, = 1/2·m₁·v₁² + 1/2·m₂·v₂²
∴ = 1/2×1.00×10² + 1/2×1.50×5² = 68.75 J
The final kinetic energy of the system, = 1/2·m₁·v₃²
= 1/2×1.00×4² = 8 J
The amount of kinetic energy lost during the collision, is given as follows;
=
-
= 8 J - 68.75 J = -60.75 J
The amount of kinetic energy lost during the collision = 60.75 J.
Answer:
time required to mow lawn is 1274.06 minutes
Explanation:
given data
average mow = 1400 square meters each hour
area = 320000 square feet
to find out
How many minutes will take to mow lawn
solution
we know that here 1 square feet is equal to 0.092903 square meter
so 320000 square feet will be = 0.09203 × 320000 = 29728.9728 square meter
so time required is express as
time required =
time required =
time required = 21.23 hours
so time required = 21.23 × 60 min = 1274.06
time required to mow lawn is 1274.06 minutes