According to the figure
Vx= - Vcos 23.4° = - 24.8*0.9= -22.76
Vy= Vsin23.4°= 9.84
refind magnitude of V
V= sqrt(V²x + V²y)=sqrt( -22.76² + 9.84²)=24.79
its direction
let's consider Vy= Vsin x°, x° is assumed as unknown angle
so sinx=Vy/V= 0.39, so x=arcsin(0.39)=23.38, x=23.38° near 23.4°
The answer is reminiscence.
One method of coping with change is through reminiscence. There are several positive benefits of engaging in reminiscence. The present may be depressing or very unsatisfactory. By recalling a happier time, an older person may derive some contentment or the ability to endure the present.
Answer:
The answer is A.) Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on the object.
Explanation:
Your weight would change if you went to the moon because the gravitational pull is different but your mass would stay the same because the amount of matter in you wouldnt change.
Answer:
Explanation:
The bulldozer is moving the rocks as one system, the weigth for the complete system is:
From newton´s second law the acceleration can be related to the force by:
on the middle rock we have the force F12 from the first to the middle rock on the direction of movement and F32 from the las rock to the middle rock on the opposite direction of movement.
For the last rock to accelerate at the same rate it must be subjected to a force:
This equals the force F32 on the opposite direction. the resultant force on the middle rock to mantain this acceleration should be:
The sum of all the forces applied to the middle rock is:
Solving for F12: