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Gravity and motion — Question 248

Original QCE Vault practice · 1 mark

Q248 · Practice questionSimple familiar1 mark

QUESTION 248

A robot moves at constant speed around a circle of radius

2.00\,\mathrm m

, completing one revolution in

8.00\,\mathrm s

. During a half revolution, which pair gives its average speed and the magnitude of its average velocity?

(A)

1.57\,\mathrm{m\,s^{-1}}

and

1.00\,\mathrm{m\,s^{-1}}

(B)

1.00\,\mathrm{m\,s^{-1}}

and

1.57\,\mathrm{m\,s^{-1}}

(C)

1.57\,\mathrm{m\,s^{-1}}

and

0

(D)

0

and

1.00\,\mathrm{m\,s^{-1}}

ABCD

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