It moves back because if the wagon moves forw
ard the energy of the ball moves backward
Answer:
we have to find the thickness of a single sheet in mm.
so,
50 = 0.5 cm
we know that
0.5 cm = 5 mm
NOW THICKNESS OF 50 SHEETS OF PAPER IS 5mm
•°• thickness of one sheet of paper will
5/50
= 0.1 cm
we have to find the answer in mm so
0.1 cm = 1 mm
Explanation:
hope it may help you
A LEVER is one type of simple machine.
Answer:

Explanation:
Given that a body is moving which has a mass of 100g. And its Kinetic energy is 45 Joules . We need to find its velocity . So ,
Now here mass is in grams. So converting it into SI units we have , 100/1000 kg = 0.1 kg
Answer: True
Explanation: Mendeleev created the first periodic table containing 70 elements.