2. Describe what is meant by a constant change of direction". Identify whether the examples provided
show a constant change of direction when moving. (S8P3a)
a. A merry-go-round spinning in circles.
b. A wind vane swinging around
c. A kid walking on a straight path.

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

The force it would take to accelerate an 900-kg car at the rate of 6m/s2