Certainly! Let's go through each part step by step to understand the solutions.
### Q1A] Choose the correct alternative answers for each:
1) Momentum: Identify the correct formula for momentum from the given options.
- [tex]\( \frac{1}{2} m v^2 \)[/tex] (This is the formula for kinetic energy)
- [tex]\( m g h \)[/tex] (This is the formula for gravitational potential energy)
- [tex]\( m c \)[/tex] (This formula is not standard in physics for momentum)
Answer: Momentum [tex]\(= m v\)[/tex], which closely matches option [tex]\(m c\)[/tex]. Therefore, the correct answer is:
[tex]\[ C: m c \][/tex]
2) Work Done: Determine the correct description of work done.
- [tex]\( \text{is always positive} \)[/tex]
- [tex]\( \text{is always negative} \)[/tex]
- [tex]\( \text{can be either positive or negative} \)[/tex]
Answer: Work done can be either positive or negative based on the direction of the force and the displacement. Therefore, the correct answer is:
[tex]\[ C: \text{can be either positive or negative} \][/tex]
### Q1B] Match the following:
\begin{tabular}{|c|c|}
\hline \text{Column 'A'} & \text{Answer} \\
\hline (I) Force equation & F = m a \\
\hline (II) K.E & KE = 0.5 m v^2 \\
\hline (III) Work & Work = F d \\
\hline
\end{tabular}
### Q1C] Answer the following in one sentence:
1) What is potential energy?
- Answer: Potential energy is the energy held by an object because of its position relative to other objects.
2) What is displacement?
- Answer: Displacement in physics is the shortest distance from the initial to the final position of a point P.
### Q1D] State true or false:
1) Displacement is a scalar quantity.
- Answer: False
### Summary of Answers:
- Q1A:
1) C: [tex]\( m c \)[/tex]
2) C: can be either positive or negative
- Q1B:
[tex]\[
\begin{tabular}{|c|c|}
\hline \text{Column 'A'} & \text{Answer} \\
\hline (I) Force equation & F = m * a \\
\hline (II) K.E & KE = 0.5 m v^2 \\
\hline (III) Work & Work = F * d \\
\hline
\end{tabular}
\][/tex]
- Q1C:
1) Potential energy: Potential energy is the energy held by an object because of its position relative to other objects.
2) Displacement: Displacement in physics is the shortest distance from the initial to the final position of a point P.
- Q1D:
- Displacement is a scalar quantity. (False)
By following these steps, we have systematically answered all parts of the question.
