Suppose that a block is pulled 16 meters across a floor. what amount of work is done if the force used to drag the block is 22 n?

Anybody wanna ? (picture included? )

What object a collides with object b and bounces back its final momentum is?

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.