Which term defines the energy of motion?
a. chemical energy
b. electrical energy
c. gravitational energy
d. kinetic energy user: what is electromagnetic energy that travels in transverse waves?
a. nuclear energy
b. potential energy
c. radiant energy
d. thermal energy user: sound energy is caused by
a. enunciation.
b. noise.
c. resonance.
d. vibration.

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

The force will determine the acceleration.

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm