3. which of the following the best example of a hypothesis: (1 pt)
a) i think the marble will go farther when i increase the height of the ramp.
b) the speed of the car will increase when the time decreases.
c) if the ball is dropped from an increased height, then its bounce will also increase.
d) i believe that too much tv is bad for your vision.

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?