A 16 kg object is initially at rest. A constant force of 8.0 N is exerted for 4 s on that object. The speed of this object will be

Question

○ m/s 5

○ m/s 2

○ m/s 4

○ m/s 3

Answer 1

A 16 kg object is initially at rest. A constant force of 8.0 N is exerted for 4 s on that object. The speed of this object will be

○ m/s 5

◉ m/s 2

○ m/s 4 

○ m/s 3

The correct answer: 2 m/s

:The explanation

F= m×a ⇒ a= F/m = 8/16= 0.5 m/s²

v= a× t= 0.5×4=2 m/s