Answer:
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The direction of friction force is always the opposite of the direction of the movement.
In this problem, we have an applied force of 20N and this creates a movement. Then, the friction comes in and applies a force of 2.4N.
Because they are in different directions, we need to subtract them:
We don't know the direction because there is no picture (at least I can't see ☺️). But the movement will be to the direction of the 20N.
Answer:
Explanation:
Hello.
In this case, since the force is defined in terms of the mass and acceleration by:
We can easily compute the mass by solving for it:
Whereas the force is 182 N (kg*m/s²) and the acceleration is 13 m/s², therefore, we obtain:
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Answer:
The value is
Explanation:
From the question we are told that
The distance of the target from the riffle is
The height at which the bullet hit the target is
Considering the vertical motion
Generally from kinematic equations we have that
At the initial stage the velocity is zero i.e
=>
=>
Generally the velocity of the bullet when it leaves the riffle is mathematically represented as
=>
=>