When an object falls freely towards the earth, then its total energy :

(a) increases

(b) decreases

(c) remains constant

(d) first increases and then decreases

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Solution

c)remains constant

Because mechanical energy=kinetic energy +potential energy.

This remains constant because when potential energy changes into kinetic decreases during free fall. Thus, the total energy is conserved or remains constant.

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When an object falls freely towards the earth, then its total energy : (a) increases (b) decreases (c) remains constant (d) first increases and then decreases

c)remains constant Because mechanical energy=kinetic energy +potential energy. This remains constant because when potential energy changes into kinetic decreases during free fall. Thus, the total energy is conserved or remains constant.

When an object falls freely towards the earth, then its total energy :

(a) increases

(b) decreases

(c) remains constant

(d) first increases and then decreases

c)remains constant

Because mechanical energy=kinetic energy +potential energy.

This remains constant because when potential energy changes into kinetic decreases during free fall. Thus, the total energy is conserved or remains constant.