If a body is moving in a straight line but it keeps changing its speed, then the motion of the body is:

non-uniform

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uniform

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stationary

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this motion cannot be defined

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Solution

The correct option is A
non-uniform

When a body is moving in a straight line and its speed changes frequently it implies that the body will cover unequal distances in equal intervals of time. Hence this is a non-uniform motion.

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(i) If a body travels equal distances in unequal intervals of time then the body is said to be in a state of non-uniform motion.
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(iii) If a body travels equal distances in equal intervals of time then the body is said to be in a state of non-uniform motion.

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Q. Fill in the blanks with the correct words.

1. A motion that repeats itself at equal intervals of time is called .................... (periodic motion/pendulum).
2. Motion is the change in the position of a body with respect to ...................(distance/time).
3. The slope of the distance-time graph of a body gives its .................... (speed/distance travelled).
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If a body is moving in a straight line but it keeps changing its speed, then the motion of the body is:

The correct option is A non-uniform When a body is moving in a straight line and its speed changes frequently it implies that the body will cover unequal distances in equal intervals of time. Hence this is a non-uniform motion.

The correct option is A
non-uniform

When a body is moving in a straight line and its speed changes frequently it implies that the body will cover unequal distances in equal intervals of time. Hence this is a non-uniform motion.