The motion of a freely falling body is an example of .......... motion.
uniformly accelerated
non-uniformly accelerated
constant velocity
constant speed
A ball rolling along the ground gradually slows down and finally comes to rest is due to.............
friction
magnetic force
electrostatic force
muscular force
The angle between the ........... and the incident ray is called the angle of incidence.
surface
normal
tangent
reflected ray
For an object, the state of rest is considered to be the state of ............. speed.
increasing
decreasing
inverse
zero
The laws which govern the motion of planets are called.............
Newton's Laws
Kepler's Laws
Avogadro's Laws
De Morgan's Laws
The substances which have very low ignition temperature and can easily catch fire with a flame are called ........... substances.
hazardous
perilous
incombustible
inflammable
