Forces and Motion
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Speed, Velocity, and Acceleration
SubtopicSpeed, Velocity, and Acceleration under Forces and Motion for Grade 9 IB.
Preview questions (no answers)
- 1.
What is the speed of an object that does not move at all?
A.B.Infinite
C.D.Undetermined
- 2.
Calculate the distance covered by a skateboarder moving at for seconds.
A.B.C.D. - 3.
If a ball is thrown upwards and slows down, it is undergoing:
A.Positive acceleration
B.Constant velocity
C.Negative acceleration
D.Zero acceleration
Download the worksheet for Forces and Motion - Speed, Velocity, and Acceleration to practice offline. It includes additional chapter-level practice questions.
Newton’s Laws of Motion
SubtopicNewton’s Laws of Motion under Forces and Motion for Grade 9 IB.
Preview questions (no answers)
- 1.
If an object is moving at a constant velocity, the net force must be:
A.Increasing
B.Decreasing
C.Zero
D.Constant and positive
- 2.
Which law describes why a rocket can propel itself in space where there is no air to push against?
A.Newton's First Law
B.Newton's Second Law
C.Newton's Third Law
D.Law of Inertia
- 3.
What is the acceleration of a kg object when a net force of N is applied?
A.m/s
B.m/s
C.m/s
D.m/s
Download the worksheet for Forces and Motion - Newton’s Laws of Motion to practice offline. It includes additional chapter-level practice questions.
Friction and Air Resistance
SubtopicFriction and Air Resistance under Forces and Motion for Grade 9 IB.
Preview questions (no answers)
- 1.
Which of these is most likely to reduce the friction of a sliding box?
A.Placing rollers or wheels under the box
B.Putting more items inside the box
C.Using a rougher surface to slide it on
D.Pushing the box downwards while sliding it
- 2.
If you push a book across a table and then let go, why does it eventually stop?
A.Because the force of the push runs out
B.Because of the force of gravity pulling it sideways
C.Because friction acts in the opposite direction of its motion
D.Because the book loses mass as it moves
- 3.
What is the direction of the air resistance force on a car moving forward?
A.Forward
B.Backward
C.Upward
D.Downward
Download the worksheet for Forces and Motion - Friction and Air Resistance to practice offline. It includes additional chapter-level practice questions.
Distance-Time and Velocity-Time Graphs
SubtopicDistance-Time and Velocity-Time Graphs under Forces and Motion for Grade 9 IB.
Preview questions (no answers)
- 1.
A car moves at for . What is the shape of the area to be calculated on a velocity-time graph to find the distance?
A.Triangle
B.Rectangle
C.Circle
D.Trapezium
- 2.
Which physical quantity is represented by the slope of a velocity-time graph?
A.Speed
B.Distance
C.Acceleration
D.Time
- 3.
If you calculate the slope of a distance-time graph, what units will your answer be in?
A.Seconds
B.Meters
C.Meters per second
D.Meters per second squared
Download the worksheet for Forces and Motion - Distance-Time and Velocity-Time Graphs to practice offline. It includes additional chapter-level practice questions.