Ablock of mass 20 kg sits on a ramp with an angle of 31 degrees above the horizontal. assuming no friction, how fast will the block accelerate down the ramp?

7.89 m/s^2
5.34 m/s^2
2.98 m/s^2
4.17 m/s^2

The density of a liquid could be found by using

The slope of a velocity time graph over any interval of time gives the during that interval

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents