A 2 kg toy car moves at a speed of 5 m/s. a. What is the kinetic energy of the car?b. If a child applies a 3 N force for 2 m in the same direction the car is already moving, how much work is done on the car?c. What is the change in the car’s kinetic energy from the applied force?d. What is the final kinetic energy of the car?e. What is the velocity of the car after the child applies the 3 N force?

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.