Question

9. Read the following and answer any four questions from 9 (i) to 9 (v) (1×4=4)

The velocity-time graph of an object of mass m = 50 g is shown in figure.

Observe the graph carefully and answer the following questions.

i. State the kind of motion from A to B

a. Uniform motion

b. Uniform acceleration

c. Rest

d. Non uniform motion

ii. The acceleration of object from 0 to 3 second is_______________

iii.Calculate the force on the object in the time interval 0 to 3 seconds.

iv. Calculate the force on the object in the time interval 6 to 10 seconds.

v. Is there any time interval in which no force acts on the object? Justify your

answer
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Answer 1

Answer:

i rest

ii 40 m/s²

iii F = MA

= 50/1000×40 =2 N

iv 50/1000×30 = 1.5 N

v yes between 3 to 6 as the body is at rest

Explanation:

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