Question

A car and a truck are both travelling with a constant speed of 20 m/s. The
car is 10 m behind the truck. The truck driver suddenly applies his brakes,
causing the truck to decelerate at the constant rate of 2 m/s2. Two seconds later
the driver of the car applies his brakes and just manages to avoid a rear-end
collision. Determine the constant rate at which the car decelerated.

Answer 1

Answer:

Explanation : truck parameters u = 20m \ s v = 0 a = 2m / s ^ 2 t = 10 sec . by 1st law of motion cars parameters u = 20mls v = 0 because breaks applied . t = ( 10-2 ) sec after 2 sec a = 2.5m \ s2 . by 1st law of motion grandmaismad .

Explanation:

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