Answer:
a = -47.93 m/s²
Explanation:
given,
speed of particle in positive x-direction, u = 97 m/s
speed of particle in opposite direction, v = -42 m/s
time = 2.9 s
average acceleration, a = ?
now,
a = -47.93 m/s²
Hence, the average acceleration is equal to -47.93 m/s²
<u>Explanation</u>:
Consider the given function
Given that the velocity of rocket is increases at the rate of
The mass of rocket is decreasing at rate of .
Hence
Now find the rate of change of kinetic energy when and
Now consider the given equation,
Now substituting the values and
The rate at which kinetic energy changing is 25MJ
Answer:
3.67 km
Explanation:
Joe distance towards coffee shop is,
And the Max distance towards bookstore is,
Now the distance between the Joy and Max will be,
By applying pythagorus theorem,
Substitute 0.40 km for OB and 3.65 km for OA in the above equation.
Therefore the distance between there destination is 3.67 km.
Answer:In a series circuit, adding more resistors increases total resistance and thus lowers current. But the opposite is true in a parallel circuit because adding more resistors in parallel creates more choices and lowers total resistance. If the same battery is connected to the resistors, current will increase.
Explanation: