work done = force * distance
work = 62 * 2 = 124 j
Answer:
Most interstellar clouds remain stable in size because the force of gravity is opposed by thermal pressure within the cloud.
(thermal pressure is the pressure resulting from the thermal motions of the particles in the cloud)
when the apple moves in a horizontal circle, the tension force in the string provides the necessary centripetal force to move in circle. the tension in the string is given as
T=mv²/r
where T = tension force in the string , m = mass of the apple
v = speed of apple , r = radius of circle.
clearly , tension force depends on the square of the speed. hence greater the speed, greater will be the tension force.
at some point , the speed becomes large enough that it makes the tension force in the string becomes greater than the tensile strength of the string. at that point , the string breaks
To convert 3 miles per hour into m/s, first we have to convert miles in to meter and then hour in to second.
As 
and
Therefore,
Answer:
B. Kinetic energy of the system is partially used up in the deformation of the vehicles.
Explanation:
In an inelastic collision, momentum is conserved, but kinetic energy is not. Kinetic energy is lost as heat or lost in the deformation of the objects.
