1.
State what is meant by a scalar. [1]
JD SCIENCE
Forces and motion
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by a vector. [1]
3.
State what is meant by Newton's first law. [1]
4.
State what is meant by Newton's second law. [1]
5.
State what is meant by Newton's third law. [1]
6.
State what is meant by weight. [1]
7.
State what is meant by stopping distance. [1]
8.
State what is meant by momentum. [1]
9.
State what is meant by Hooke's law. [1]
10.
State what is meant by a moment. [1]
11.
Owain is asked about a scalar in a WJEC Physics paper.
(a) Describe a scalar. [2]
(b) Explain why a scalar is important in this topic. [3]
12.
Owain is asked about a vector in a WJEC Physics paper.
(a) Describe a vector. [2]
(b) Explain why a vector is important in this topic. [3]
13.
Owain is asked about Newton's first law in a WJEC Physics paper.
(a) Describe Newton's first law. [2]
(b) Explain why Newton's first law is important in this topic. [3]
14.
Owain is asked about Newton's second law in a WJEC Physics paper.
(a) Describe Newton's second law. [2]
(b) Explain why Newton's second law is important in this topic. [3]
15.
Owain is asked about Newton's third law in a WJEC Physics paper.
(a) Describe Newton's third law. [2]
(b) Explain why Newton's third law is important in this topic. [3]
16.
Owain is asked about weight in a WJEC Physics paper.
(a) Describe weight. [2]
(b) Explain why weight is important in this topic. [3]
17.
W = mg. 60 kg, g=10 [3]
18.
F = ma. 4 kg, 3 m/s² [3]
19.
a = Δv/t. 0 to 20 m/s in 8 s [3]
20.
p = mv. 0.2 kg at 15 m/s [3]
21.
F = ke. k=40 N/m, e=0.05 m [3]
22.
Thinking distance at 15 m/s if reaction time is 0.6 s [3]
23.
Owain carries out a WJEC-style required practical linked to forces and motion. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Owain carries out collecting valid data for forces and motion. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Owain carries out drawing a graph for forces and motion. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Owain carries out evaluating a method about forces and motion. This is a typical WJEC required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare a scalar with a vector. [4]
28.
Compare a vector with Newton's first law. [4]
29.
Compare Newton's first law with Newton's second law. [4]
30.
Compare Newton's second law with Newton's third law. [4]
31.
Apply your knowledge of stopping distance to this situation: affected by speed, tiredness, road, brakes [3]
32.
Apply your knowledge of momentum to this situation: conserved in a closed system [3]