<span>Q: Fill in the blanks in the following statement: Momentum is a _____ quantity because it involves _______.
A: </span><span>Fill in the blanks in the following statement: Momentum is a __ Vector___ quantity because it involves ___Velocity____.</span>
Answer:
a)
b)
Explanation:
Given:
- x-component of avg. velocity,
- x-component of avg. velocity,
- initial position of rhino,
- initial time,
- final time,
a)
As we know that average velocity is total displacement per unit time.
Position of x-coordinate of rhino:
Position of y-coordinate of rhino:
b)
<u>Now the distance from the origin:</u>
I really think it could be a 23 kg
Answer: The mass of ball is 10 grams.
Explanation:
Given : Kinetic energy = 4.5 J
Velocity = 30 m/s
The formula for Kinetic energy is as follows.
where,
K.E = Kinetic energy
m = mass
v = velocity
Substitute the values into above formula as follows.
Thus, we can conclude that the mass of ball is 10 grams.
Answer:
It cannot reach us by conduction or convection as there is no medium such as air in most part of the space between the earth and the sun. From the sun the heat comes to us by another process known as radiation. The transfer of heat by radiation does not require any medium.