Multiple Choice Questions
1. A stone
dropped from the top of a building which reaches the ground in 4 seconds. The
height of
the building
is
a) 4 m
b)
78.4 m
c) 19.6 m
d)
39.2 m
2. A car
reaches a velocity of 300 km hr-1 after covering distance of 0.5 km. The
acceleration of the
car is
a) 6.9 ms-2
b) 90 ms-2
c) 9.6 ms-2
d) 3 ms-2
3. A force
actin gon 5 kg mass causes an acceleration of 0.2 ms-2 in it. The magnitude of
applied
force is
a) 10 N
b)
2.5 N
c) 1 N
d)
0.04 N
4. An
acceleration of 0.4 ms-2 is produced in a body when a force of 8N acts on it.
The mass of the
body is
a) 3.2 kg
b)
20 kg
c) 0.05 kg
d) 50 kg
5. A car
suffers head on collision with another car with 100 N force of impact for a
short time of 2
milliseconds.
The impulse is given by
a) 0.2 Ns
b)
50 Ns
c) 200 Ns
d)
0.02 Ns
6. A 60 kg
car is moving at a speed of 54 km hr-1. Its linear momentum is
a) 3240 Kg
ms-1
b) 900 Kg
ms-1
c) 11664 Kg
ms-1
d) 18.5 Kg
ms-1
7. A heavy
body moving with 10 ms-1 collides elastically with very light body at rest.
After
collision,
the light body moves at a velocity of
a) Zero
b) 10 ms-1
c) 20 ms-1
d) 5 ms-1
8. A light
particle moving with 20 ms-1 collides elastically with heavy body at rest.
After collision,
the velocity
of the heavy body is
a) Zero
b) 20 ms-1
c) 10 ms-1
d) 40 ms-1
9.
Acceleration in a body is always produced in the direction of
a) Torque
b)
Force
c) Moment
d)
Velocity
10.
Acceleration is defined as
a) Rate of
change of velocity
b) Rate of change of speed
c) Rate of
change of displacement
d) Rate of change of distance
Answer