Question

B. You are approaching a stoplight moving with a velocity of 42.0 m/s. The light turns

Answer 1

Answer:

Time needed is 2.5 seconds. The distance covered is 31.3 m

Explanation:

Answer 2

Answer:

displacement of the car will be 88.2 m

Explanation:

As we know that initial speed of the car is given as

$v_i = 42 m/s$

after complete stop the final speed of the car is

$v_f = 0$

now the deceleration caused due to applied brakes is given as

$a = 10 m/s^2$

now by kinematics we will have

$v_f^2 - v_i^2 = 2 a d$

$0 - 42^2 = 2(-10)d$

$d = 88.2 m$