Hamida is pushing a table in a certain direction with a force of magnitude 10
N. At the same time her, classmate Lila is pushing the same table with a
force of magnitude 8 N in a direction making an angle of 60o
to the direction
in which Hamida is pushing. Calculate the magnitude of the resultant force
on the table and its direction.
Answers
Answer:
The increase in velocity of a freely falling body in 1 sec is
(A) 9.8m/s2
(B) 9.8 m/s
(C) –9.8m/s2
(D) -9.8 m/s
2. Which of the following is not possible?
(A) An object moving in certain direction with acceleration in perpendicular direction
(B) A object moving with constant acceleration but zero velocity.
(C) A object moving with variable speed & uniform velocity.
(D) none of these
3. A body is weighed at the poles & then at the equator, the weight.
(A) at the equator will be greater than at poles
(B) at poles will be greater than at equator.
(C) same at both poles and equator.
(D) depends upon the shape of object
4. A ball of mass m strikes the bat with a speed V & goes back in opposite direction with
2V. if ball was in contact for time t, then Average force applied by the bat is
3 mv
2my
(A)
(B)
(C)
(D) mut
my