4 (a) (i) Which of these forces keeps the Moon moving around the Earth?
A contact
B electrostatic
C gravitational
D magnetic
(ii) Which of these is a scalar quantity?
A velocity
B momentum
C energy
D acceleration
(b) Figure 7 shows a box at rest on a floor - Edexcel - GCSE Physics - Question 4 - 2018 - Paper 1
Question 4
4 (a) (i) Which of these forces keeps the Moon moving around the Earth?
A contact
B electrostatic
C gravitational
D magnetic
(ii) Which of these is a s... show full transcript
Worked Solution & Example Answer:4 (a) (i) Which of these forces keeps the Moon moving around the Earth?
A contact
B electrostatic
C gravitational
D magnetic
(ii) Which of these is a scalar quantity?
A velocity
B momentum
C energy
D acceleration
(b) Figure 7 shows a box at rest on a floor - Edexcel - GCSE Physics - Question 4 - 2018 - Paper 1
Step 1
Which of these forces keeps the Moon moving around the Earth?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The gravitational force (option C) keeps the Moon moving around the Earth. Gravity is the attractive force between two masses, in this case, the Earth and the Moon, which results in the Moon's orbit.
Step 2
Which of these is a scalar quantity?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Energy (option C) is a scalar quantity because it has magnitude but no direction. Unlike vector quantities like velocity or momentum, scalar quantities do not have direction associated with them.
Step 3
Add another vector to the diagram in Figure 7 to show the weight of the box.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To indicate the weight of the box in Figure 7, draw a downward arrow originating from the box's center, labeled 'weight of the box.' This arrow represents the gravitational force acting on the box, directly opposing the force from the floor.
