Saved Bookmarks
| 1. |
A boy of mass 45 kg runs up a staircase of 45 steps in 9 sec. if the height of each step is 15 cm, find his power(g=10m,-2) |
|
Answer» Answer: 375 W Explanation: m=50kg T=9s g=10ms-² F=mg =50×10=500N h=15m Total height=45×15=675m Therefore, S=675m W=F×S=500×675=3375J P=W/T=3375/9=375W FOLLOW PLZZZZZ VOTE FOR BRAINLIEST ....... |
|