Answer:62.11 s
Explanation:
Given
weight of man =730 N
mass of man 
radius of pound r=5 m
mass of book 
velocity of book 
let
be the velocity of man
conserving momentum



time taken by man to reach south end

The car has more inertia than the bike. Why? Because the car has a greater mass than the bicycle.
1. I think you should compare diagrams of moon phases from the textbook to diagrams of moon phases online. Because if you pick D it will take to long and C will help you out whith 3 different things to look at.
2. The moon changes in appearances from the perspective of people on earth because it's revolving around the planet and the earth is revolving around the sun, so A. Hoped this helped.
you could make a self propelled car all you need is cardboard, wheels, and a balloons or rubber bands
Answer:
1) Assuming an adult person has an average mass of m=80 kg, and assuming it takes about 30 seconds to climb 5 meters of stairs, the energy used by the person is
So the power output is
And since the estimate we made is very rough, we can say that the power output of the person is comparable to the power output of the light bulb of 100 W.
2) Based on the results we found in the previous part of the exercise, since the power output of the person is comparable to the power output of 1 light bulb of 100 W, we can say that the person could have kept burning only one 100-W light bulb during the climb.
Explanation: