Kinematics:Question 3 A car is traveling at a speed of 60 km/h.
What piece of information is needed to know the velocity of
the car?
Select one:
The energy the car requires to travel at this speed.
The time it took the car to reach this speed.
The direction of the car's travel.
The time the car traveled at this speed.

Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.