Section 1 motion, forces and conservation of energy

• What is inertia?

  Resistance to change in velocity
• What does inertia imply for a stationary object?

  The resultant force on it is zero
• What happens to a moving object with constant velocity regarding inertia?

  It remains at the same velocity
• What does the second law of motion state?

  Force equals mass times acceleration
• How is acceleration related to force according to the second law?

  It is proportional to the resultant force
• Why are large accelerations dangerous for riders?

  They can cause serious injuries
• What does inertia resist?

  Change in velocity
• How does density affect inertia?

  Inertia increases with density
• What is linear motion?

  Movement in a straight line
• What characterizes the speed of an object in linear motion?

  It remains constant in a straight line
• What happens when an object in linear motion contacts a surface?

  It may change velocity or direction
• How does the center of a trolley relate to its motion?

  It affects the amount of force applied
• What is the effect of gravity on a trolley?

  It helps to move the trolley downwards
• What is the role of human power in moving a trolley?

  It provides the necessary force to move
• How can one measure the distance traveled by a trolley?

  By measuring the same distance repeatedly
• What happens when a trolley starts moving?

  It experiences a change in velocity
• What is the significance of the center of mass in a trolley?

  It affects the stability of the trolley
• How does the center of mass relate to the strength of a trolley?

  It influences the distribution of weight
• What is the relationship between the center of mass and the applied force?

  The applied force acts on the center of mass
• What is the effect of back pressure on a trolley?

  It can slow down the trolley's motion
• How does back pressure relate to the trolley's speed?

  It can decrease the speed of the trolley
• What happens when a trolley starts to move uphill?

  It requires more force to overcome gravity
• What is the relationship between mass and strength in a trolley?

  More mass generally means more strength
• How does the amount of strength affect the trolley's motion?

  It determines how fast the trolley can move
• What is the significance of measuring strength in a trolley?

  It helps in understanding its performance
• What is the effect of friction on a trolley's motion?

  It can slow down the trolley
• How does friction relate to the trolley's speed?

  More friction generally decreases speed
• What happens when a trolley encounters a rough surface?

  It experiences increased friction and slows down
• What is the role of the sensor in a trolley system?

  It detects the trolley's position and movement
• How does the sensor affect the trolley's operation?

  It provides feedback for adjustments
• What is the significance of the sensor's feedback in a trolley system?

  It helps optimize the trolley's performance
• What is the effect of a smooth surface on a trolley's motion?

  It reduces friction and increases speed
• How does a smooth surface influence the trolley's acceleration?

  It allows for greater acceleration
• What happens when a trolley moves on a rough surface?

  It experiences decreased acceleration
• What is the relationship between the trolley's mass and its acceleration?

  More mass generally means less acceleration
• How does mass affect the force required to accelerate a trolley?

  More mass requires more force to accelerate
• What is the significance of understanding mass in relation to acceleration?

  It helps predict the trolley's behavior
• What is the effect of a heavy load on a trolley's speed?

  It generally decreases the speed
• How does a heavy load influence the trolley's acceleration?

  It reduces the acceleration of the trolley
• What happens when a trolley is overloaded?

  It may struggle to move or stop