Relative velocity Quiz 1

Question 1

The relative velocity of an object with respect to another object can be,

Accepted Answer

All the above

Answer

Negative

Answer

Positive

Answer

$${{v}_{ab}}=-{{v}_{ba}}$$

Question 2

The relative velocity of a crow flying at $$2$$ m/s with respect to a pigeon flying in the same direction at $$1.3$$ m/s is,

Accepted Answer

$$0.7$$ m/s

Answer

$$2.3$$ m/s

Answer

$$5.7$$ m/s

Answer

$$-2$$ m/s

Question 3

If drone $$A$$ is moving at a constant velocity of $$5$$ m/s and drone $$B$$ is moving at a constant velocity of $$8.2$$ m/s. Then relative velocity of drone $$A$$ with respect to $$B$$ is

Accepted Answer

$$-3.2$$ m/s

Answer

$$3.2$$ m/s

Answer

$$-13.2$$ m/s

Answer

$$13.2$$ m/s

Question 4

Consider two reference frames $$P$$ and $$Q$$, they are moving relative to each other at a constant velocity. How will a person running with acceleration observed from $$P$$ and $$Q$$,

Accepted Answer

Acceleration observed in both frames is equal.

Answer

Acceleration observed in both frames is different.

Answer

Acceleration observed in $$P$$ is greater than $$Q$$ frame.

Answer

None of the above

Question 5

A helicopter is moving with a velocity of $$58$$ m/s and the wind is blowing at $$15$$ m/s against the helicopter. What is the relative velocity of the helicopter?

Accepted Answer

$$154.8$$ km /hr

Answer

$$43$$ km/hr

Answer

$$-43$$ km/hr

Answer

$$-154.8$$ km /hr