#1
As per kinematics we know that
here we know that
now we will have
Now by Newton's II law
#2
part a)
Impulse = change in momentum
given that
m = 0.153 kg
v = 25.7 m/s
now we have
Part b)
As per Newton's II law we know that
as we know that
Answer:
Rusting of irons
Change in molecular composition
irreversible change
Explanation:
chemical change Is an irreversible change so we will only observe permanent change
Answer:
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion.
Explanation:
Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.
Hope this helps :)
Answer:
Plan A
Explanation:
Acceleration in a circle is toward the center of the circle, while velocity is always a straight line that's tangent to the circle. When the boy let's go of the rope the Acceleration toward the center of the circle disappears. The v ball then follows the straight path, tangent to the circle.