Question

When an object moves in a straight line, which statement is true? 1.When the object moves at a constant speed, the resultant force is zero 2.When the object accelerates, the resultant force is zero 3.When the object moves at a constant speed, the forward force is greater than the resistive force 4.The object requires a resultant force in order to move at constant speed

Answer 1

Answer:

when an objects moves at constant speed net force is zero because acceleration is zero.

Proving...

F = ma

if a=0

F = 0

1st statement correct