Question 1:

The correct answer is:

B. newtons (N)

• A. joules (J) → unit of energy

• C. watts (W) → unit of power

• D. m/s → unit of velocity

Explanation:
Force is measured in newtons (named after Isaac Newton). From Newton's second law:

Mass (kg) × acceleration (m/s²) gives kg·m/s², which is defined as 1 newton (N).

*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 answer is:

A. force = mass × acceleration

This is Newton's second law of motion.

• B → incorrect (mass × force doesn't give acceleration)

• C → incorrect (weight is already a force; weight = mass × gravity, not used that way here)

• D → incorrect (weight × force has no physical meaning here)

*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:

We use Newton's second law:

Given:
m=2 kg
a=4 m/s2

The correct answer is D. 8 N.

*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:

We use Newton's second law:

Given:
F=3 N
m=100 g=0.1 kg (remember to convert to kg for SI units)

The correct answer is A. 30 m/s².

*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 answer is:

C. His mass was the same but his weight was less.

Explanation:

• Mass is the amount of matter in an object and does not change with location.

• Weight is the force of gravity on an object and depends on the local gravitational field strength.

• On the Moon, gravity is about 1/6 of Earth's, so Buzz Aldrin's weight was less, but his mass remained unchanged.

• A is incorrect — he was not weightless; the Moon still has gravity, just less than Earth's.

• B is incorrect — his mass did not become zero.

• D is incorrect — his weight was less, not the same.

*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:

The correct answer is:

D. amount of matter (kg) / Pull of gravity (N)

Explanation:

• Mass = amount of matter in an object → measured in kilograms (kg)

• Weight = pull of gravity on an object → measured in newtons (N)

The other options mix up the definitions and units incorrectly.

*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:

The correct answer is:

A. weight = mass × gravitational field strength (W = m × g)

• B is incorrect — weight is mass × g, not mass ÷ g.

• C is incorrect — that rearranges to W = m/g if solved for weight, which is wrong.

• D is incorrect — that would give mass = g/W, which is not correct.

So A is the standard formula relating weight and mass.

*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:

Row 8 (Mars)
Given: Gravitational field strength = 4 N/kg, Mass = 8 kg

✅ Missing value: 32 N

*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:

Row 9 (Venus)
Given: Gravitational field strength = 8.9 N/kg, Weight = 0.44 N

✅ Missing value: 0.049 kg

*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:

Given: Gravitational field strength = ?, Mass = 240 kg, Weight = 888 N

✅ Missing value: 3.7 N/kg

*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.