Chapter
08-Test-01
Total
Marks:30
Time:45 Min
Note: All
question of 2 marks each. Solve all question
Q.1: A
farmer moves along the boundary of a square field of side 10 m in 40
s. What will be the magnitude of displacement of the farmer at the
end of 2 minutes 20 seconds from his initial position?
(A)10m
(B)10
(C)20
(D)None
Q.2: An
Object travels 16 m in 4 s and then another 16 m in 2 s. What is the
average speed of object?
(A)5
m/s
(B)5.33
m/s
(C)12
m/s
(D)None
Q.3: A man
swim in 90 m long pool. He covers 180 m in one minute from one end to
other and back on the same straight path. What is the average speed
and velocity?
(A)3
m/s and 0 m/s
(B)0
m/s and 3 m/s
(C)1.5
m/s and 0 m/s
(D)None
Q.4: which
is not true ?
(A)
The acceleration is taken to be positive if it is in the direction of
velocity
(B)The
acceleration is taken to be negative if it is opposite to the
direction of velocity
(C)SI
unit of acceleration is m/
(D)
Acceleration is negative for a accelerated motion of car.
Q.5: Which
is not true?
(A)The
motion of a freely falling object is an example of uniform
accelerated motion.
(B)
If a car travelling along straight road increases its speed by
unequal amounts in equal intervals of time, then car is said to be
moving with non-uniform motion.
(C)If
an object travels in a straight line and its velocity increases or
decreases by equal amounts in equal intervals of time, Then the
acceleration of the object is said to be uniform.
(D)All
above are false statement.
Q.6:
Starting from a stationary position, a boy start to run attains
velocity of 6 m/s in 30 s. Calculate the acceleration ?
(A)0.2
m/
(B)
0.1 m/
(C)
2.0 m/
(D)None
Q.7: A bus
decreases its speed from 80 km/h to 62 km/h in 5 s, what will be the
acceleration of the bus ?
(A)1
m/
(B)
0.1 m/
(C)
2.0 m/
(D)
None
Q.8:The
breaks applied to a car produce an acceleration 6 m/in opposite to
the direction of motion. If the car takes 2 s to stop after the
application of breaks. Calculate the distance travelled during this
time.
Q.9:
A boat starting from rest on a lake accelerates in straight line at
constant rate of 3.0 m/for 4.0 s. find the distance covered by boat
during this time.
Q.10:
An artificial satellite is moving in a circular orbit of radius 7/22
km. Calculate its speed if it takes 2000 s to revolve around the
earth.
Q.11:A
car moves with a speed of 160 km/h for 30 minutes and then with a
speed of 240 km/h for the next 30 minutes. Calculate the total
distance(km) covered by the car in 60 minutes.
Q.12: An
airplane accelerates down a runway at 3.20 m/s2
for 32.8 s until is finally lifts off the ground. Determine the
distance traveled before takeoff.
Q.13:A
feather is dropped on the moon from a height of 0.835 meters. The
acceleration of gravity on the moon is 1.67 m/s2.
Determine the time for the feather to fall to the surface of the
moon.
Q.14:
A stone is dropped into a deep well and is heard to hit the water
3.41 s after being dropped. Determine the depth of the well. (hint:
assume acceleration 9.8 m/)
Q.15: A driver starts her car and steps on the gas pedal. The car gradually accelerates to 50 km/hr. A few minutes later, the driver suddenly slams on the brakes to avoid hitting a box in the road. As the car comes to a stop, the driver’s body appears to lurch forward in the seat until it is restrained by the seat-belt.
Use the following graphs to answer the next two questions.
1. Which graph best matches the motion of the car described in the paragraph above?
a. A
b. B
c. C
d. D
2. A student rides her bicycle from her home to the library. She stays there for a while and then goes to a friend’s house. Which graph best matches this situation?
a. A
b. B
c. C
d. D
Answer:
- D
- B
- A
- D
- D
- A
- A
- 12 m
- 24 m
- 1m/s
- 200 km
- 1720 m
- 1 s
- 57 m
- C,A
For any
further query:
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