Answer:
What is a Free Body Diagram?
The free body diagram helps you understand and solve static and dynamic problem involving forces. It is a diagram including all forces acting on a given object without the other object in the system. You need to first understand all the forces acting on the object and then represent these force by arrows in the direction of the force to be drawn.
Explanation:
Answer:
46.15m/s
Explanation:
We are given that
Initial speed,u=38 m/s
Height of cliff,h=70 m
We have to find the speed with which the cycle strikes the ground at a height 35 m on the other side.
h'=35 m
Using conservation law of energy
Where 
Substitute the values
Answer:
Q2: a) make sure the sugar sample used is constant
b) conduct the experiment twice and use the average
c) the type of container used
Q3: a) out of the three, icing sugar dissolves the fastest
b) substances dissolves faster in warmer waters
Q4: molecules in warmer waters moves at a greater speed than in colder waters, having more kinetic energy and colliding with the solute more frequently. More energy is then transferred to the solute molecules to break their bonds, making them dissolve faster.
The statement ‘A tertiary source is the most desirable source for a
researcher to use’ is false. It should be that your source is primary because
it is more reliable and is related to the research you have been working on.
Answer:82. Since you have a distance and a force, then the easiest principle to use is energy, i.e. work.
The work done by friction is F * d. This work cancels out the kinetic energy of the stone (1/2)mv^2
Fd = (1/2)mv^2
F = (1/2)mv^2/d.
Plug in m = 20 kg, v = 3 m/sec, d = 40 m.
83. With more mass, the kinetic energy is higher now. The work needed is higher. W = F * d and F is the same.
Explanation:Hope I helped :)
