What principle of light’s behavior can be used to make a far away object appear closer and also make a small object appear larger?

An input force of 7 n is applied to a machine with a mechanical advantage of 1.75. what is the maximum the machine could lift? 12.25 n7n7.25 n26.2 n

How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?