# An object with a mass of #5 kg# is on a surface with a kinetic friction coefficient of # 4 #. How much force is necessary to accelerate the object horizontally at # 7 m/s^2#?

##### 1 Answer

Feb 19, 2017

#### Answer:

231 Newtons

#### Explanation:

**Newton's Law**

**Friction equation where u is the coefficient of friction**

**The magnitude of normal force is equal to the force of gravity**

**Plugging in numbers**