Starting from rest, a 5.0 kg block slides 2.5 m down a rough 30.0° incline in 2.0 s. Determine the following
a. the work done by the force of gravity
b. the mechanical energy lost due to friction
C. the work done by the normal force between the
block and the incline

Acar's position in relation to time is plotted on the graph. what is the car's average velocity? a) 5 m/s b) 10 m/s c) 30 m/s d) 50 m/s

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.