SPARKLING SHORT ANSWER QUESTIONS
PHYSICS
1Q. Can a
body have zero velocity and finite acceleration?
2Q.Can a
body have a constant speed but varying velocity?
4Q. A
particle is moving along a circular path of radius r what is the distance
traversed in the 1/4th of revolution what is the displacement?
5Q. If the
displacement of a body is proportional to the square of time, state whether the
body is moving with uniform velocity or uniform acceleration?
6Q. The
displacement of a particle is proportional to the cube of time, state whether
the body is moving with uniform velocity or uniform acceleration depends on
time?
7Q. Can you
use the equation of kinematics to find the height attained by an object
projected upward with any velocity?
8Q. Can a
relative velocity of two bodies be greater than the absolute velocity of
either?
9Q. A ball
is dropped from a top of tower and another ball is thrown at the same time.
Which ball hit the ground earlier? Explain.
10Q. A car
is moving on the level road where the rain is falling vertically downward. Why
does the front wind screen get wet, whereas hind screen remain dry?
11Q. A
swimmer wants to reach to a point just opposite on the other bank of river. How
should he swim and why?
12Q. Can the
direction of velocity change at every instant if acceleration is constant?
13Q. A
projectile moves in a parabolic path without air resistance is there any point
at which acceleration is i) parallel to the velocity and ii) perpendicular to
the velocity. Explain
14Q. A
hunter aims his gun and fires a bullet directly towards a monkey sitting on a
distance tree. At the instant the bullet leaves the barrel of the gun, the
monkey drops from the tree freely. Will the bullet hit the monkey. Explain?
15Q. A
person sitting on a horse moving with constant velocity along the straight line
throws himself vertically upward will the person return to the moving horse?
16Q. Two
balls of different masses. Assuming air resistance to be same on each ball
which mass falls earlier if they are simultaneously released from the same
height? Explain with expression.
17Q. Why
does a cricketer while catching a ball move his hand backward direction?
18Q. A man
is at rest in the middle of a pond on perfectly frictionless iceberg. How can
he get himself to shore?
19Q. A man
drops his briefcase in elevator but it does not fall to the floor, is it
possible?
20Q. When a
heavy truck collides with a passenger car, the occupants of the car are more
likely to be hurt than the truck driver, why?
21Q. A stone
when thrown on a glass window smashes the window in the pieces but a bullet
passes through a hole, why?
22Q. It is
easier to pull then push a lawn roller why?
23Q. Why
lubricants and ball bearing are used in the machine, explain how they reduce
the friction?
24Q. Is a
large brake on bicycle wheel more effective than a smaller one?
25Q. Why do
we sleep on muddy road?
26Q. When a
horse pulls a cart the cart pulls the horse backwards. Explain how the motion
take place?
27Q. When a
ball is thrown up the magnitude of its momentum decreases and then increases
does this violate the law of conservation of momentum?
28Q. Can an object have eastward while
experiencing a westward acceleration. Give example.
