Complete the following statement: The term net force most accurately describes t

Question

Complete the following statement: The term net force most accurately describes the mass of an object the inertia of an object. the quantity that causes a displacement. the quantity that keeps an object moving. the quantity that changes the velocity of an object. A 1000-kg car accelerates from rest to 30 m/s in a distance of 150 m. What is the magnitude of the average net force acting on the car? 1000 N 2500 N 2000 N 1300 N Not here An apple crate with a weight of 225 N accelerates along a frictionless surface as the crate is pulled with a force of 14.5 N as shown in the drawing. What is the horizontal acceleration of the crate? 1.40 m/s^2 0.427 m/s^2 1.29 m/s^2 0.597 m/s^2 0.644 m/s^2

Explanation / Answer

a)option e) the quantity that changes the velocity of an object
Net force IS the vector sum of ALL forces acting on an object.
Net force is the cause, acceleration is the effect.

b)
2) 2as=vf^2-vi^2
2*a*150 = (30*30)
a= 3 m/s^2
F=ma
F = 1000*3=3000 N (option c)

c) An apple crate with weight of 225 N acceleration along a friction

If Newtons are bothering you, convert them to kg: kg =N/g

a = Fnet/m = Fnet*g/W = 14.5cos19°*9.8/225 = 0.597 m/s(option d)

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