What is the average velocity of the time interval 0 to 4 seconds
1 answer:
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Explanation:
When an object is moving in a circular path, the motion of the object is called uniform circular motion. The object moves under the action of centripetal acceleration. It is given by :
r is the radius of circular path
v is the speed of the object
In uniform circular motion, the object moves with constant speed. Also, the velocity of the object keeps on changing because it changes direction at every instant of time. Also, the object is accelerating due to change in velocity.
So, the correct options are (b) and (c).
Answer:
- The speed will be
Explanation:
We can use the following kinematics equation
where is the final speed,
its the initial speed, a is the acceleration, and d the distance.
The force will be tripled, the force is:
in 1D
Now, for the original problem, we have
For the second problem, we have
starting from the rest, we have the same initial velocity.
As the force is tripled, we have:
But the mass its the same, so
So the acceleration its also tripled.
As the distance traveled by the arrow must also be the same, we have:
And this will be the speed from the arrow leaving the bow.