Question: For each of the statements below, indicate whether the statement is true or false and explain your reasoning.
1. The cross-sectional area of a hollow needle is half of the cross-sectional area of the tubing connected to the needle. As the fluid flows from the tubing into the needle, the distance travelled per unit time by the fluid particles in the needle will be the same as that in the tubing.
2. A 5 kg ball that was initially at rest is rolled down a 3-meter-long slope. As the ball rolls down the slope, it maintains its potential energy.