Question

Hello friend
please give the answer ​

Answer 1

Answer:

ac= starting velocity + final velocity

taken time

=20+60

5

=20/3600 + 60/3600

=180+60

5

=180×12

=2060

2060 _km per hour

IS AN ANSWER OF THESE QUESTION hope its help you

Answer 2

Initial Velocity(u) = 80km/hr = 200/9m/s

Final Velocity(v) = 60km/hr = 150/9m/s

Time Taken = 5s

We know,

$a = \frac{v - u}{t} \\ a = \frac{ \frac{150}{9} - \frac{200}{9} }{5} \\ a = \frac{ \frac{ - 50}{9} }{5} \\ a = \frac{ - 50}{9} \times \frac{1}{5} \\ a = \frac{ - 10}{9}$

Therefore, The Acceleration is -1.11m/s²