Question 1:

The correct answer is:

D. Joules (J)

Joules are the SI unit for measuring energy and work done.

• Watts (W) measure power (rate of energy transfer).

• Newtons (N) measure force.

• Pascals (Pa) measure pressure.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 2:

The correct formula for gravitational potential energy (G.P.E.) is:

A. G.P.E. = mass × g × height change

Where:

• mass is in kilograms (kg)

• g is gravitational field strength (approximately 10 N/kg on Earth)

• height change is in metres (m)

So G.P.E. is measured in joules (J).

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 3:

Using the formula:

Given:

• m=5 kg

• g=10 N/kg

• h=2 m

Correct answer: D. 100 J

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 4:

Let’s solve step by step.

Step 1: Write down known values

• Mass m=100 g=0.1 kg

• g=10 N/kg

• Loss in G.P.E. =2 J

• Height fallen =h (what we need to find)

Step 2: Use G.P.E. formula

ΔG.P.E.=m×g×h

2=0.1×10×h

Step 3: Solve for h

2=1×h

h=2 m

Step 4: Match with options
2 m is option B.

Final answer: B. 2 m

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 5:

The correct formula for kinetic energy is:

C. K.E. = ½ m v²

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 6:

6. Bowling ball
Mass m=2 kg, velocity v=3 m/s

KE=½×2×(3)²

KE=1×9=9 J

✔ 9 J

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 7:

7. Tennis ball
Mass m=100 g=0.1 kg, velocity v=10 m/s

KE=½×0.1×(10)²

KE=0.05×100=5 J

✔ 5 J

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 8:

8. Netball
KE=1 J, v=2 m/s, find m.

1=½×m×(2)²

1=½×m×4

1=2×m

m=0.5 kg=500 g

✔ 0.5 kg (or 500 g)

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 9:

Using the formula for gravitational potential energy:

Given:

• m=0.6 kg

• g=10 N/kg

• h=5 m

Correct answer: D. 30 J

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 10:

We know all of the G.P.E. (30 J) is converted to kinetic energy just before hitting the ground (ignoring air friction).

Step 1: Write down known values

Step 2: Solve for v

30=½×0.6×v²

30=0.3×v²

v²=30/0.3 =100

v=√100=10 m/s

Step 3: Match with options
B. 10 m/s

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.