The time it takes for an object to reach a certain level given the distance and the initial velocity can be calculated through the equation,
d = V₀t + 0.5gt²
Where d is the distance, V₀ is the initial velocity, g is the acceleration due to gravity and t is time. Substituting the known values from the given above,
25 = (-7.5)(t) + 0.5(9.8 m/s²)(t²)
The value of t from the equation 3.15s. Hence, it will take the object 3.15 seconds to reach the ground.
Answer:
A capacitor with capacitance C is initially charged with charge q. At time t=0, a switch is thrown to close the circuit connecting the capacitor in series with a resistor of resistance R. (see image below)
What is the current I0 that flows through the resistor immediately after the switch is thrown? Express your answer in terms of any or all of the quantities q, R, and C.
Explanation:
charge on the capacitor,
q = CV
C is the capacitance of the capacitor
V is the voltage across the capacitor
Determine the current flowing through the resistor after the switch is thrown
According to Ohm’s law, current flowing through the resistor is ,
V is the voltage across the resistor
R is the resistance of the resistor
since
Current through the resistor immediately after the switch is thrown
Answer:
m/s^2
Explanation:
Force = mass × acceleration
kgm/s^2 = kg × acceleration
where acceleration = Force ÷ mass
= kg m/s^2 ÷ kg
:Acceleration = m/s^2
Total distance between Sally's house and mall = 10 kilometers
Distance covered during half way drive = Kilometers
Now, she goes back to her home.
Distance covered going back home = Kilometers
Now, she drives from home to mall.
Distance covered from Sally's home to mall = 10 kilometers
Hence, the total distance Sally traveled = 5 + 5 + 10
Total distance Sally traveled = 20 kilometers
Hence, the answer is 20 kilometers
Answer:
Explanation:
Let mass of bullet = m1 = 28g= 0.028 kg
mass of pendulum = m2 = 3.1 kg