An object of mass 5kg moving with a velocity of 6m/s collides with another object of mass 3kg moving with a velocity of 4 m/s. After collision both bodies stuck together and move with a common velocity. Find the velocity?

If you want to change the pitch of a sound, you have to change the

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.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force