Question

You are traveling in a car that is moving at a velocity of 20 m/s. Suddenly, a car 10 meters in front of you slams on its brakes. At that moment, you also slam on your brakes and slow to 5 m/s. Calculate the acceleration if it took 2 seconds to slow your car down.

Answer 1

Given:

Initial Velocity of our car = 20m/s

Distance of another car from our car = 10m

Final velocity of our car = 5m/s

To find:

The acceleration of our car to slow down in 2 seconds.

Solution:

Using the equation v = u+at

where v = 5m/s

u = 20m/s

t = 2s

On substituting the values in the equation, we get:

5 = 20 + 2a

2a= 15

a= 7.5m/s^2

Therefore, the acceleration of our car to slow down in 2 seconds is 7.5m/s^2.

Answer 2

Answer:

hope, it helps you