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solniwko [45]
2 years ago
14

In which situation is the speed of the car constant while its velocity is changing?

Physics
1 answer:
Sati [7]2 years ago
7 0

Answer:

B, the car travels around a circular track at 30 m.

Explanation:

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D = M / V

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A ball moving with an initial velocity of 5 m/s comes to rest after 2s. What was the ball's acceleration?
Inga [223]

Answer:

-2.5m/s²

Explanation:

The acceleration of a body is giving by the rate of change of the body's velocity. It is given by

a = Δv / t        ----------------(i)

Where;

a = acceleration (measured in m/s²)

Δv = change in velocity = final velocity - initial velocity   (measure in m/s)

t = time taken for the change (measured in seconds(s))

From the question;

i. initial velocity = 5m/s

final velocity = 0 [since the body (ball) comes to rest]

Δv = 0 - 5 = -5m/s

ii. time taken = t = 2s

<em>Substitute these values into equation (i) as follows;</em>

a = (-5m/s) / (2s)

a = -2.5m/s²

Therefore, the acceleration of the ball is -2.5m/s²

NB: The negative sign shows that the ball was actually decelerating.

6 0
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Diffraction occurs when waves _____ after passing through an opening
saw5 [17]
The answer to your question is A
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This version of Einstein’s equation is often used directly to find what value? E = ∆mc2

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I hope it helps, Regards.
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3 years ago
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