Answer: 100 J
Explanation: 1/2 5 x 2^2 = 100
Hope this made any sense.
Answer:
you need to multiply the momentum and the mass
Answer:
C
Explanation:
it transforms electrical energy into mechanical energy.
Answer:
171.5 N
Explanation:
The gravitational force on an object due to the Earth is given by

where
m is the mass of the object
g is the acceleration due to gravity
The acceleration due to gravity at a certain height h above the Earth is given by

where:
G is the gravitational constant
is the Earth's mass
is the Earth's radius
Here,

So the acceleration due to gravity is

We know that the mass of the object is
m = 70 kg
So, the gravitational force on it is
