3. An automobile accelerates 1.77 m/s over 6,00 s to reach the freeway speed at
the end of an entrance ramp. If the car's final speed is 88.0 km/h, what was its
initial speed when it began accelerating? Express your answer in kilometers per
hour.

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

In science and physics what is the standard unit of measure for speed?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.