Question

what is the force required to keep a body moving in the straight line with a velocity of 29 m/s

Answer 1

That is not enough information.

Answer 2

Look, is there friction? Drag? Under the circumstances you described, the best I can do is say, "F=0", as a body moving at 29 ms^-1 will continue as such without any forces acting on it.

Answer 3

so what can cause a bodies velocity to change

Answer 4

An acceleration will cause a body's velocity to change. Acceleration components in force, impulse, etc. exist.

Answer 5

i think u are rigth but better say that the unbalanced force will change the motion .try to apply newton s 2 law .only an unbalanced force can change motion

Answer 6

excuse me newtons 1 law

Answer 7

Alright, so I should say a "nonzero acceleration" will change motion.

Gravity, for instance, is a fundamental interaction that imparts acceleration.

Answer 8

i do not understand u . but i think to close the topic lets just apply newtons 1 law of inertia to the question

Answer 9

no NET FORCE is required to keep the body in motion