A velocity vector is represented with the arrow found below: Which of the following pairs of horizontal and vertical components could represent the resultant
velocity vector shown above?
1) Vx = 5 m/s and Vy = 10 m/s
O2) vx = 7 m/s and Vy = 7 m/s
3) VX
=
10 m/s and Vy = 5 m/s
(4)
4) Vx = 10 m/s and Vy =
= 10 m/s

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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.