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Oksanka [162]
3 years ago
6

When Marie sees the red traffic light, Marie brakes to a halt from a speed of 70 m/s in just 2 seconds. What is her deceleration

?
Physics
1 answer:
SashulF [63]3 years ago
7 0

Answer:

-35 m/s^2

Explanation:

<u>Deceleration is the complete opposite of acceleration and is calculated by adding a negative sign to the formula for finding acceleration.</u>

Since acceleration is calculated by diving the change in velocity with time, deceleration will become:

 Deceleration =   -Δv/t, where Δv = change in velocity and t = time

In this case, Δv = 70 m/s and t = 2 s, hence;

Deceleration = -70/2 = -35 m/s^2

<em>The deceleration is 35 </em>m/s^2<em>.</em>

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