On a distance-time graph, what is shown when the curve is flat going from left to the right? A. a negative speed
B. no speed
C. a positive speed
D. It does not mean anything.

Please help me !!im on a test

What is the prp when using 5 mhz acoustic waves through soft tissue, imaging a death of 20 cm?

An 800 kg car is moving at 32 m/s when it hits the afterburner. the after burner applies a 180,000 n force for 25 seconds. what is the rockets final speed?

On his honeymoon, james joule attempted to explore the relationships between various forms of energy by measuring the rise of temperature of water which had fallen down a waterfall on mount blanc. what maximum temperature rise would one expect for a waterfall with a vertical drop of 20 m? the specific heat of water is 4186 j/kg ∙ k. a)0.064 c° b)0.053 c° c)0.071 c° d)0.047 c°