Answer:
KINETIC ENERGY
What is the kinetic energy of a 50 kg object moving at 20 m/s?
10,000 kg m²/s²
Step-by-step explanation:
Use the K.E. = ½ mv² formula to solve the given problem.
Given:
K.E. = ?
m = 20 m/s
v = 50 kg
Solution:
\begin{gathered}K.E. = \frac{1}{2}m {v}^{2} \\ K.E. = \frac{1}{2} (20 \: m/s) {(50 \: kg)}^{2} \\ K.E. = 4 {(50)}^{2} \\ K.E. = 4(2 \: 500) \\ K.E. = 10 \: 000 \: kg \: {m}^{2}/ {s}^{2} \end{gathered}
K.E.=
2
1
mv
(20m/s)(50kg)
K.E.=4(50)
K.E.=4(2500)
K.E.=10000kgm
/s
Thus, 10,000 kg m²/s² is the Kinetic Energy.
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Answers & Comments
Answer:
KINETIC ENERGY
What is the kinetic energy of a 50 kg object moving at 20 m/s?
Answer:
10,000 kg m²/s²
Step-by-step explanation:
Use the K.E. = ½ mv² formula to solve the given problem.
Given:
K.E. = ?
m = 20 m/s
v = 50 kg
Solution:
\begin{gathered}K.E. = \frac{1}{2}m {v}^{2} \\ K.E. = \frac{1}{2} (20 \: m/s) {(50 \: kg)}^{2} \\ K.E. = 4 {(50)}^{2} \\ K.E. = 4(2 \: 500) \\ K.E. = 10 \: 000 \: kg \: {m}^{2}/ {s}^{2} \end{gathered}
K.E.=
2
1
mv
2
K.E.=
2
1
(20m/s)(50kg)
2
K.E.=4(50)
2
K.E.=4(2500)
K.E.=10000kgm
2
/s
2
Thus, 10,000 kg m²/s² is the Kinetic Energy.