55 m/s is the answer if nothing has changed it will come back the same speed it was thrown up. Have an amazing day!
40kg
Explanation:
Given parameters:
Kinetic energy = 500J
Velocity = 5m/s
Unknown:
Mass of the object = ?
Solution:
Kinetic energy is the energy due to motion of a body. It is expressed as:
K.E = mv²
m is the mass of the body
v is the velocity
To find the mass, make it the subject of the expression:
m = }[/tex]
m = }[/tex] = 40kg
Learn more:
Kinetic energy brainly.com/question/6536722
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Answer:
4.2 A
Explanation:
V=IR
V= voltage
I= Current
R= resistance
so you will find the resistance in the circuit so
R= V/I
R=2V/0.70A
R=2.857 ohms ( TO THE NEAREST THOUSANDTH)
then you will find the current of the 12V battery using the resistance in the circuit
I=V/R
I=12/2.857
I=4.2A (TO THE NEAREST TENTH)