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gladu [14]
3 years ago
13

A car is stopped at a red light. When the light turns green, the car accelerates until it reaches a final velocity of 45 m/s. It

takes the car 12 s to reach this speed. How far does the car travel during this time.
Physics
1 answer:
hoa [83]3 years ago
4 0

Answer:

270 m

Explanation:

The motion of the car is a uniformly accelerated motion, so we can use the following suvat equation

s=(\frac{u+v}{2})t

where

s is the distance covered

u is the initial velocity

v is the final velocity

t is the time

For the car in this problem,

u = 0 (it starts from rest)

v = 45 m/s is the final velocity

t = 12 s is the time

Solving for s,

s=(\frac{0+45}{2})(12)=270 m

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                                                                                                        = 0.3 m

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The energy stored in it is,

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