What is the total amount of force needed to keep a 6.0 kg object moving at speed of 5.0 m/s? (F=ma)
A. 30 N
B. 60 N
C. ON
D. 10 N

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

The slope of a velocity time graph over any interval of time gives the during that interval

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z