A car starts from rest and reaches a speed of 7.7 m/s in 6.3 s. What is its acceleration?
Answer in units of m/s^2.

How far will it have traveled in that time?
Answer in units of m.

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.