/
AI Flashcards
Save to my account
Sign up
AI Flashcards
Physics distance and motion basics
Study
1
Question
What is the unit for distance in physics?
Answer
meters
2
Question
Finish the sentence: Every measurement or quantity has a unit, such as meters for ______ and seconds for ______.
Answer
distance, time
3
Question
What prefix is used for 1,000 meters, and how is it abbreviated?
Answer
kilo, km
4
Question
How do you convert 5 micrometers to meters?
Answer
Divide by 1,000,000 or multiply by \(10^{-6}\).
5
Question
What is the standard form for 1 millimeter?
Answer
\(1 \times 10^{-3}\) m
6
Question
Finish the sentence: A force is any ______ or ______.
Answer
push, pull
7
Question
Distinguish between contact and non-contact forces, giving examples of each.
Answer
Contact forces require touching, e.g., friction, normal force; non-contact do not, e.g., gravity, magnetism.
8
Question
What is a vector in the context of forces?
Answer
An arrow showing direction and magnitude of a force.
9
Question
If two forces act in opposite directions, 5 N left and 8 N right, what is the resultant force?
Answer
3 N to the right
10
Question
How do you find the resultant force for two perpendicular forces?
Answer
Use Pythagoras theorem on the magnitudes.
11
Question
Finish the sentence: If forces are balanced, the object will not ______ and its velocity ______.
Answer
accelerate, won't change
12
Question
State Newton's First Law of Motion.
Answer
An object remains at rest or in uniform motion unless acted on by a resultant force.
13
Question
What is the difference between a scalar and a vector? Give examples.
Answer
Scalar has magnitude only (e.g., speed, distance); vector has magnitude and direction (e.g., velocity, displacement).
14
Question
Finish the sentence: Weight is the force due to ______ acting on an object.
Answer
gravity
15
Question
Calculate the weight of a 2 kg object on Earth where \(g = 10\) N/kg.
Answer
20 N
16
Question
When lifting an object at constant speed, what force must you apply?
Answer
A force equal to its weight.
17
Question
What is the equation for work done?
Answer
Work done = force × distance moved in the direction of the force
18
Question
Finish the sentence: Change in gravitational potential energy = mass × ______ × change in ______.
Answer
g, height
19
Question
What are the units of speed and velocity?
Answer
meters per second (m/s)
20
Question
How do you calculate speed from a distance-time graph?
Answer
Gradient (rise over run).
21
Question
What does the gradient of a velocity-time graph represent?
Answer
Acceleration
22
Question
State the equation for acceleration.
Answer
\(a = \frac{v - u}{t}\)
23
Question
What is the acceleration due to gravity on Earth?
Answer
9.8 m/s² downwards (or 10 m/s² if specified)
24
Question
How do you find distance traveled from a velocity-time graph?
Answer
Area under the graph.
25
Question
What are SUVAT equations used for?
Answer
Predicting motion under constant acceleration.
26
Question
In SUVAT, if an object starts from rest, what is u?
Answer
0 m/s
27
Question
Finish the sentence: Newton's Second Law states that resultant force = mass × ______.
Answer
acceleration
28
Question
Describe a practical to verify Newton's Second Law.
Answer
Use a trolley pulled by masses over a pulley, measure acceleration with light gates, plot force vs. acceleration.
29
Question
Explain Newton's Third Law with an example.
Answer
For every action force, there is an equal and opposite reaction force. E.g., Earth pulls ball down, ball pulls Earth up.
30
Question
What factors affect thinking distance in a car?
Answer
Speed, distractions, alcohol, drugs.