The deceleration of the car is 3 m/s².
<u>Explanation:</u>
So the initial velocity of the car is given as 12 m/s. As the car is said to slow down and then it stops after 4 seconds, so the final velocity is zero.
We know that the acceleration acting on any object to stop the motion of that object is termed as deceleration or negative acceleration.
This is because, acceleration is the ratio of change in velocity to time taken for that change in velocity.
So.,
So the deceleration of the car is 3 m/s².
Answer:
light itself doesn't have a shadow
Explanation:
light emits light to where things around the light may create the shadows
Wave speed = (wavelength) x (frequency)
= (45 meters) x (9 per second)
= 405 meters per second .
I would say nitrogen, because we couldn't breather without nitrogen.
I believe the correct answer is true. <span>A machine can make doing work easier by reducing the force exerted, changing the distance over which the force is exerted, or changing the direction of the force. Hope this answer the question.</span>