ECAT Pre Engineering Physics Chapter 3 online mcq test with answers for chapter 3 (Motion and Force)

Physics ECAT Pre Engineering Chapter 3 Motion and Force Online Test

Sr. #	Questions	Answers Choice
1	An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called	a rocket an aeroplane a projectile a ballon
2	Distance covered by a freely falling body in 2 sec will be	4.9 m 19.6 m 29.2 m 44.1 m
3	The artillery shells travel along parabolic paths under the influence of	magnetic field electric field electromagnetic field gravitational field
4	An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow	a circular path a straight line a hyperbola a parabola
5	The motion of a projectile is	one dimension two dimension three dimension all of them
6	The motion in a plane is the motion in	one dimension two dimension three dimension four dimension
7	The motion of a body in a straight line is the motion in	one dimension two dimension three dimension four dimension
8	If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is	a = M/mv a = mM/v a = mv/M a = v/mm
9	A rocket carries its own fuel in the form of	liquid only liquid or solid liquid and solid liquid or solid and oxygen
10	A typical rocket consists of fuel	more than 60% of launch mass less than 60% of launch mass less than 80% of launch mass more than 80% of launch mass
11	A typical rocket ejects the burnt gases at speeds over	400 ms<sup>-1</sup> 40000m s<sup>-1</sup> 40000 ms<sup>-1</sup> 60000 ms<sup>-1</sup>
12	A typical rocket consumes about	100 kg s<sup>-1</sup>of fuel 1000 kg s<sup>-1</sup>of fuel 10000 kg s<sup>-1</sup>of fuel 100000 kg s<sup>-1</sup>of fuel
13	Flight of rocket in the space is an example of	Newton's first law Newton's third law Newton's second law all of them
14	When a shall explodes a mid-air, the total momentum of its fragments is	less than the momentum of shell equal to the momentum of shell greater than the momentum of shell none of them
15	When a shell explodes in mid-air, its fragments fly off in	only one direction in two direction different directions a particular direction

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