3 years ago

A car has positive acceleration. What information can you infer from this?

Physics

1 answer:

mario62 [17]3 years ago

6 0

Answer: B: The car is speeding up in the same direction as it is traveling.

Explanation:

I took the test and got it right

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Suppose that a car traveling to the west (the - x direction) begins to slow down as it approaches a traffic light. Which stateme

Amanda [17]

Answer:

(A) it's acceleration is negative but but it's velocity is positive

Explanation:

In the question it is given that begins to slow down so its speed is decreasing it is does not means that its speed is negative

For example let first the velocity of the car is 30 m/sec and when its velocity decreases it becomes 20 m/sec in 5 sec

So it is not negative at all

Now the acceleration is the rate of change of velocity

$a=\frac{dv}{dt}$

$a=\frac{v_2-v_1}{dt}=\frac{20-30}{5}=-2 m/sec^2$

So acceleration is negative here

So option (a) will be the correct option

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What does a Battery and a human have in common?

Elena L [17]

Both are objects and contain matter and mass. both are made of atoms, and produce reactions.