Question

An 18.0 N force pulls a cart against a 15.0 N frictional force. The speed

of the cart increases 1.0 m/s every 5.0 s. What is the cart's mass?


Someone please help me on this I only have a few minutes

Answer 1

m = 15 kg

Step-by-step explanation:

Applied force to the cart, F' = 18 N

Force of friction, f = 15 N

Net force acting on the cart,

F = F' - f

F = 18 - 15

F = 3 N

The change in velocity of the cart is 1 m/s every 5 s.

We need to find the mass of the cart.

The formula of net force is given by :

F = ma, where a is the acceleration of the cart

`F=(m\Delta v)/(t)\\\\m=(Ft)/(\Delta v)\\\\m=(3* 5)/(1)\\\\m=15\ kg`

So, the cart's mass is 15 kg.