A mass of 8kg rests on a horizontal table . It is connected to a vertically hanging mass of 4kg by a light string passing over a smooth pulley at the edge of the table . The frictional resistance of the table is 2Nkg-¹ for the mass on the table. What is the acceleration of each mass when the system is free to move ? Take gravity=10ms-² . After one second the string is cut.
a. What is the deceleration of the mass on the table ?
b. How much further will it move before coming rest ? ​

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon