Moving body on a diagonal path

[emutudeng]

Just a question about simple moving body exercise. With no acceleration.

Body moves with speed 15 m/s, time 12 seconds, mass 0.8 kg, and the force have a side effect 5 Newtons.

Firstly, F=mg, so 0,8*0,98.Then I calculated the actual moving direction's force by pythagoros, that's 0,95N.


Should i use cosinus or what ?

 

[tiny-tim]

hi emutudeng!

i don't understand …

you say there's no acceleration, but then you use g,

and what do you mean by "side effect"?

and what angle is there (for the cosine)?

what exactly is the body doing? ​

 

[emutudeng]

Lets say there is a body (0,8kg) moving in direct line for 12 seconds with balanced speed 15 m/s, but there is a wind blowing from a side with a force 0,5 N.

So the body is moving diagonally and I should get the diagonal with pytagoros. The thought that the angle is between the actual trajector and the first direct line, but maybe i don't even need it.

Edit: i need the distance

 

[tiny-tim]

ah!

ok, then this is wrong …

Firstly, F=mg, so 0,8*0,98.Then I calculated the actual moving direction's force by pythagoros, that's 0,95N.

F is the force, and that's already given, as 0.5 N

you need to find the acceleration, so use F = ma

then find the sideways distance moved, then use pythagoras

 

[Nickie]

It depends on the direction of the force and the angle at which the body is moving. If the force is acting in the same direction as the movement, then you can use cosine to calculate the force component in that direction. However, if the force is acting at an angle to the movement, then you will need to use trigonometric functions to calculate the force components in both the direction of movement and the direction of the force. It is important to consider all forces acting on a body in order to accurately calculate its motion.