Question

1. The direction of velocity of an object moving along a circular path
a) is always tangent to the circular path. b) is always perpendicular to the circular path.
c) is always towards the centre of the circular path.
d) None of the above.



2. A body increases its speed from 20 km/h to 50 km/h in 10 seconds. its acceleration is:
a) 0.82m/s2
b) 3 m/s2
c) 3 km/h2
d) 0.82 km/h2


3. The area under the velocity – time graph represents:
a) The acceleration
b) Velocity
c) distance
d) speed


4. A body whose momentum is constant must have constant
a) Force
b) Velocity
c) Acceleration
d) All of these


5. A girl is standing on spring platform. The reading of the spring balance is 60 kg wt. If the girl jumps outside the platform, then reading of the spring balance will
a) Increase
b) Remain same
c) Becomes zero
d) First a then c


6. A body is moving with a constant speed in a straight line path. A force is not required to
a) Increase its speed
b) Decrease its speed
c) Change the direction
d) Keep it moving with uniform velocity​

Answer 1

Answer:

1) b

2) d

3) C

4) a

5) a

6) c

Explanation:

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Answer 2

Answer:

1.c

2.b

3.d

4.c

5.a

6.a

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