Answer:
7200 m
Explanation:
The pond is 4000 meters away. The woman runs at 2.5 m/s. The time it takes her to reach the pond is:
t = 4000 m / 2.5 m/s
t = 1600 s
The dog is running at 4.5 m/s this entire time. So the distance he runs is:
d = 1600 s × 4.5 m/s
d = 7200 m
There are already derived equations for rectilinear motion at constant acceleration. For free falling objects, they are further simplified because only the gravitational force is acting on the body. The equations for time and velocity at impact are:
t = √2h/g
v = √2gh
where
h is the height
g is the acceleration due to gravity equal to 9.81 m/s²
1. t = √2(380 m)/9.81 m/s² = 8.8 seconds
2. v = √2(9.81 m/s²)(380 m) = 86.3 m/s
If an object has a balanced force on it, there is a possibility that the <u>object may be in a position</u> i.e. there is no change in speed and direction of the body.
If the forces acting on an object is balanced, it means that the net force acting on the body is zero.
According to Newton's law of motion, an object will continue in a state of motion in a straight line unless acted upon by an external force.
This external force might be a balanced or unbalanced force. Hence if an object has a balanced force on it, there is a possibility that the <u>object may be in a position</u> i.e. there is no change in speed and direction of the body.
Learn more here: brainly.com/question/20835245
Answer:
In the case of an electric bulb, the electrical energy is converted to light and heat. The amount of electrical energy put into a bulb = the amount of light energy (desirable form) plus the heat energy that comes out of the bulb (undesirable form).
Explanation:
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