Question

question 2 of 25 a dog of mass 4 kg runs up a hill of height 8 m. how much gravitational potential energy does the dog gain? a. 229 j b. 32 j c. 78 j d. 314 j

Explanation:

Step1: Use potential energy formula

$PE = mgh$

Step2: Substitute values (m=4kg, g=9.8m/s², h=8m)

$PE = 4 \times 9.8 \times 8$

Step3: Calculate result

$PE = 313.6 \approx 314\ \text{J}$

Answer:

D. 314 J