How much force must be applied to a 4 kg to get it to accelerate at 3 m/s^2?
1 answer:
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Answer:
1 hour
Explanation:
Since the definition of velocity is , we can calculate the position at time t of an object moving at speed v with
.
The position of the first ferry is
The position of the second ferry is
We want to know when they will be 6 miles apart. This means, if we call that distance d, that we want to know when the difference between their positions will be d, or (we know that at the beginning the position of the ferry 1 is of higher value than that of ferry 2 since it left before).
We use our previous formulas then:
Since we want the time, we do:
And substitute our values:
Answer:
<h2>0.9 Meters Per Second</h2><h2>54 Meters Per Minute</h2><h2>3.24 Kilometers Per Hour</h2>Explanation:
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( Pic Below )
The magnitude of the electric field at this location is
<u>Explanation:</u>
Given
Electric field at this location determined by the force and charge.
E=F/Q
Answer:
Explanation:
This is a projectile motion problem. We will first separate the motion into x- and y-components, apply the equations of kinematics separately, then we will combine them to find the initial velocity.
The initial velocity is in the x-direction, and there is no acceleration in the x-direction.
On the other hand, there no initial velocity in the y-component, so the arrow is basically in free-fall.
Applying the equations of kinematics in the x-direction gives
For the y-direction gives
Combining both equation yields the y_component of the final velocity
Since we know the angle between the x- and y-components of the final velocity, which is 180° - 2.8° = 177.2°, we can calculate the initial velocity.