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A car decelerates uniformly from 20 m s' to zero in a time interval of 2.0 s. What are its acceleration and distance travelled during this time interval?
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17 votes
A car decelerates uniformly from 20 m s' to

zero in a time interval of 2.0 s. What are its
acceleration and distance travelled during this
time interval?

User Gprime
by
4.8k points

1 Answer

7 votes
Answer: accleration = - 10m/s²
distance = 20 m
Step-by-step explanation:
u = 20 m/s
v = 0
time = 2 s
acceleration = v-u/t
a = 0 - 20/ 2 = -10 m/s²
distance travelled
average velocity = 20/2 = 10m/s
distance travelled = av * t = 10 * 2 = 20 m
User Sachie
by
4.8k points
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