Newton'sLaws and Types of Motion
Newton’s First Law is also known as the law of: (double points for explanation and name)
Inertia
A net (resultant) force causes:
Acceleration
Which factor increases stability?
Low centre of mass
What is the formula for impulse?
Force × Time
Angular motion is caused by:
Eccentric force
Which of the following demonstrates Newton’s Third Law?
A) A swimmer pushing off a wall
B) A ball rolling until it stops
C) A gymnast losing balance
D) A force diagram with equal arrows
D) A force diagram with equal arrows
Balanced forces mean:
No change in motion
For stability, line of gravity must:
Fall within the base
Impulse changes:
Momentum
What is moment of inertia?
How hard it is to rotate
What does Newton’s Second Law state?
Force = Mass × Acceleration
In a force diagram, arrow direction shows:
Direction of force
Which sport benefits from reduced stability?
A) Gymnastics landing
B) Wrestling stance
C) Sprint start
D) Balance beam
C) Sprint start
Summation of forces means:
Sequential use of body parts
Angular momentum is: (formula)
Moment of Inertia × Angular velocity
Which of the following best describes acceleration?
Change in velocity over time
What type of force opposes motion?
Friction
A sumo wrestler is stable because: (2 responses)
They have a wide base and low COM
Greatest impulse comes from:
A) High force, short time
B) Low force, short time
C) High force, long time
D) Low force, long time
C) High force, long time
Angular momentum stays the same if:
No external torque
A football continues rolling until stopped. Which law does this show?
First
A swimmer pushes harder on water and accelerates. This is due to:
Resultant force
What is the base of support?
Points in contact with the ground
Impulse units are:
N·s
Tucking during a spin affects:
Angular velocity