If a 30-newton force is required to accelerate a 2-kilogram object at 10 meters per second?, over
a level floor, then the magnitude of the frictional
force acting on the object is
A. ON
B. 10N
C. 20N
D. 30N

B. 10N

Explanation:

In order to find the frictional force acting on the object, we can use the formula Force=mass x acceleration to find the difference in force between the event occurring in an environment with no friction and an environment with friction. Our given values are:

Force = 30N

Mass = 2kg

Acceleration = 10m/s/s

So for the formula we will first find the required amount of energy in a frictionless setting:

F = 2 x 10

F =20

This means that with the condition that there is no friction, a force of only 20N is required, but in real circumstances, a force of 30N was required. This means that the frictional force acting upon the object was 10N.

Hope this helped!

mass and volume are the answers you are looking for

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer