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Which object has a varying speed?

A. a bird flying 10 m/s for 10 seconds

B. a car slowing from 60 m/s for 10 seconds

C. a fish moving at 2 m/s for 5 minutes

D. a car traveling the speed limit

Respuesta :

B. the car is slowing down. so it's speed isn't constant

Answer:

We need to tell which object will have varying   speed

Varying speed means that the speed changes.

Option A is discarded because we can not conclude from the statement that is a bird flying 10m/s for 10 seconds.

Option B is correct because it is mentioned that a car is slowing from 60 m/s for 10 seconds.

Since, the speed is slowing means speed is changing.

Therefore, option B is correct.

Option C and D  are  discarded because is we can not conclude anything from the given statement.

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