Time of flight of projectile launched horizontally An object of mass 8 kg is projected horizontally with a speed of 21.1 ms-1 from the top of the cliff. The height of the cliff
is 41.9 m. Take g, the acceleration due to gravity, to be 9.8 ms-2.
The object is in flight for
O a. 2.9 s
O b. 4.15
O c. 8.6 s
O d. 14.3 s
O e. 2.1s
Check

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.