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Aliun [14]
3 years ago
6

The velocity of Desmond’s car changes from 20 meters/second to 10 meters/second. The change happens in 5 seconds. What’s the acc

eleration of the car? Use .
Physics
2 answers:
Sphinxa [80]3 years ago
8 0
V-V₀=at
a=(V-V₀)/t
a=(10-20)/5=-2 m/s²
Acceleration of the car is -2 m/s²
Vikentia [17]3 years ago
4 0
I would say its -2 m/s<span>2 ....hope this help..</span>
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Answer:

v_{B0}=15.73 m/s

Explanation:

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x-coordinate

p_{0x}=p_{fx}

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m_{A}v_{A0}=(m_{A}+m_{B})v_{c}cos(40) (1)

y-coordinate

p_{0y}=p_{fy}

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We can divide equations (2) and (1):

\frac{m_{B}v_{B0}}{m_{A}v_{A0}}=\frac{sin(40)}{cos(40)}

\frac{m_{B}v_{B0}}{m_{A}v_{A0}}=tan(40)

v_{B0}=\frac{m_{A}v_{A0}}{m_{B}}*tan(40)

v_{B0}=\frac{1200*25}{1600}*tan(40)

v_{B0}=15.73 m/s

I hope it helps you!

           

4 0
3 years ago
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Explanation:

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what are the answer choices?

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