What is the acceleration of a body moving with uniform velocity?

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.