The object be going at the bottom of the hill with velocity 7.75 m/s.
When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.
Given in the question a 400 kg object is sitting at rest at the top of a hill that is 30.0 m high and 80.0 m long measured along the hill . If there is no friction, velocity with which object be going at the bottom of the hill,
θ =sin^-1(30/80)
θ =22
F = 400 g sin(22) = 150 N
F = ma
150 = 400 a
a = 0.375 m/s²
v² - u²= 2 a s
v² - 0 = 2 x 0.375 x 80
v = 7.75 m/s
The object be going at the bottom of the hill with velocity 7.75 m/s.
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the force of friction
the magnetic force from Earth's north pole
the Sun's gravity
In a series circuit, the current in all points of the circuit is the same. Hence, current through the resistor r2 is same as that of r1 that is 1.5 amperes.
A circuit is the path through which current is passing which can be of open circuit or closed circuit. There are two ways in which the components are connected in the circuit namely, series and parallel.
In a series circuit, the electrical components are connected in a series fashion. Here, the current is the same in all points of the series circuit. But voltage will be different.
In the case of parallel circuits, the components are connected in a parallel fashion. The current passing through each parallelly connected device will be different.
Here, the two resistors are connected in series. Hence, the current passing through is the same that is 1.5 A for r2 also.
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sectors are the amount of resources