Answer:
<em>Net force = 21.12 N</em>
<em>angle for the force α = 45°</em>
Explanation:
<em>In this problem, we will take the left as the negative x-axis, the right as the positive x-axis, and the upward direction as the positive y-axis.</em>
The 20 N force to the left has an x component of -20 N, and y component of 0 N
The 35 N force to the right has a x component of 35 N, and a y component of 0 N
The 15 N upwards has an x component of 0 N, and a y component of 15 N
We resolve the forces into the x and y components.
for the x component Fx
Fx = -20 + 35 + 0 = 15 N
For the y component Fy
Fy = 0 + 0 + 15 = 15 N
Net force Fn = 
<em>Net force Fn = 21.21 N</em>
for the angle,
α = 
1
<em>angle for force α = 45°</em>
By Newton's 2nd law, m*a=sum_of_forces where m is the mass and a the acceleration. Here there are two forces in opposed directions.
Thus 5*a=40-8=32 therefore a=32/5=6.4m^s/2
Answer:
It happens due to force of friction
Explanation:
If a body is performing a uniform motion and no external unbalanced force appears to apply on it, then the body will come to rest after certain time. The reason behind this is the force of friction that is applied in opposite direction of the motion. So, when there is no apparent unbalanced force it means that the only force acting on the body is the force of friction. This force of friction tends to stop the motion after some period of time, because it is acting in the direction opposite to that of motion.
Hence, the reason behind a body undergoing uniform motion eventually stops is <u>Force of Friction.</u>
The correct answer for this question is this one:"D) The heavier ball will have a higher temperature because the change of temperature is inversely proportional to mass."<span>
</span>Hope this helps answer your question and have a nice day ahead.
Answer:
C. An inital volocity that is faster than the final volocity
Explanation:
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