**Given :**

A car slows down from -27.7 m/s to -10.9 m/s while undergoing a displacement of -105 m.

**To Find :**

The acceleration of the car.

**Solution :**

We know, by equation of motion :

Therefore, **acceleration of the car is 3.088 m/s².**

I think the correct answer would be processing time. The time of fifteen minutes describes how long the whole operation was done or how long is the whole processing of drilling. Hope this answers the question. Have a nice day.

**PHYSICS**

mass = 55 kg

gravitation earth = 9,8 m/s²

gravitation moon = 1,62 m/s²

Weight Change = ______?

**Answer**** ****:**

1) Earth

w = 55 × 9,8

w = **5****3****9**** ****N**

2) Moon

w = 55 × 1,62

w = **8****9****.****1**** ****N**

**Answer:**

Let N0 be the initial atoms of Be11

N0 / 2^1 = N0 / 2 Number of Be11 after 1 half-life

N0 / 2^2 = N0/ 4 Number of Be11 after 2 half-lives

30/13.81 = 2.17 half lives

N0 / 2^2.17 = N0 / 4.51 = .222 N0 or 22.2 % of atoms remain