Question

How much total mechanical energy (ME) is in a system if the PE is 10 J and the KE is 40 J? Hint: ME=KE+PE

A. 10 J
B. 40 J
C. 30 J
D. 50 J

Answer 1

D.
`\pmb{ 50~J}`

Step-by-step explanation:

As we know that
`\sf{M_(E)=K_(E)+P_(E) }`

where,

• ME=mechanical energy
• KE=kinetic energy
• PE=potential Energy

According to the question

• ME=KE+PE

• ME=40J+10J

• ME=50J

Answer 2

D. 50 J

hope it helps you you just need to put the values or substitute the value in me=ke+pe