A car is moving with a constant acceleration of
4 ms?. On seeing a person in front of it, the driver
suddenly applies a brake. If the car is moving with
a velocity of 20 ms - at the moment when driver
sees the person and the reaction time of the driver
is 2 s, then the distance it travels after the moment
it sees the person and just before applying the
brake is
(a) 48 m (b) 40 m (c) 8 m (d) 45 m
Answers
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Answer:
use s=ut+1/2at^2
Explanation:
s=20×2+1/2×4×4
s=40+8
s=48m
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