A constant force of 8.0 N is exerted for 4.0 s on a 16-kg object initially at rest.The change in speed of this object will be:
A)0.5 m/s
B)2 m/s
C)4 m/s
D)8 m/s
E)32 m/s

Question

Quizplus · Accepted Answer

The acceleration of the object can be found using Newton's second law:

F = ma

where F is the force applied, m is the mass of the object, and a is the acceleration. Rearranging the equation,

a = F/m

Substituting the given values,

a = 8.0 N / 16 kg = 0.5 m/s²

The change in speed of the object can be found using the equations of motion:

Δv = at

where Δv is the change in velocity, a is the acceleration, and t is the time. Substituting the given values,

Δv = 0.5 m/s² * 4.0 s = 2.0 m/s

Therefore, the answer is B: 2 m/s.

A Constant Force of 8