An old building is being demolished by swinging a heavy metal ball from a crane. suppose that such a 100 kg ball swings from a 20-m-long wire at speed 10m/s as the wire passes the vertical orientation. assume the ball stops after sinking 1.5 m into the wall. what was the average force that the ball exerted on the wall?

Explanation:

According to Newton's second law, we know that the average force that the ball exerts on the wall is equal to:

Now, wa calculate the ball's acceleration, using the following kinetic equation:

The ball stops after sinking 1.5 m, so . Replacing and solving for :

Finally. we calculate the magnitude of the average force:

battery with hi vtge high val resist in series

this could be newton#'s law of cooling. the cooling curve is exponential