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If a body is moving with constant velocity, its ------- is zero.

• speed

• acceleration

• distance

• displacement

The slope of velocity-time graph gives --------.

• speed

• displacement

• acceleration

• distance

Suitable instruments for measuring length are .............

• Measuring tape

• Vernier calliper

• Screw guage

• sliding balance

Digital stop watches can measure up to ........

The largest unit of length is the ...........

• parsec

• light-year unit

• astronomical unit

Difference between distance and displacement.

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