ling

Multiple Choice

• 1st
• 2nd
• 3rd

Multiple Choice

What is the significance of Newton's laws of motion in understanding the relationship between force and movement?

• They explain how objects interact with forces and predict motion.

• They only describe the motion of planets.

• They are only relevant for objects at rest.

• They are used to calculate the mass of objects.

Open Ended

Explain how an external force can cause acceleration in an object, using an example from sports or daily life.

Multiple Choice

Which of the following statements best describes the relationship between the direction of force and the direction of acceleration?

• They are always in the same direction.

• They are always in opposite directions.

• They are unrelated.

• They are sometimes in the same direction, sometimes not.

Open Ended

Explain how the direction of motion, acceleration, and force are related in different types of motion such as linear, projectile, and circular motion.

Fill in the Blanks

Fill in the blank: For objects of the same mass, the greater the force applied, the greater the

produced.

Multiple Choice

When the same force is applied to objects of different masses, what happens to the acceleration of the objects?

• The object with greater mass has less acceleration.

• The object with greater mass has more acceleration.

• Both objects have the same acceleration.

• Acceleration does not depend on mass.

Fill in the Blanks

甲、乙兩車所受外力與所產生加速度的關係圖，試回答下列問題：①甲、乙兩車的質量何者較大？②若甲車質量為30 kg，則F1為多少牛頓？③若甲車質量為45 kg，則乙車質量為？④將甲、乙兩車綁在一起，則所得關係圖應在哪一區？

Fill in the Blanks

Fill in the blank: The equation that relates force, mass, and acceleration is F =

a.

Multiple Choice

What is the SI unit of force?

• Newton

• Joule

• Watt

• Pascal

Open Ended

Explain how to convert between Kg·w and Newtons using the gravitational acceleration constant. Provide an example calculation.

Multiple Choice

Which of the following correctly describes the relationship between gravitational acceleration (g) and the distance from the center of the Earth (R)?

• g is directly proportional to R

• g is inversely proportional to R

• g is directly proportional to R squared

• g is inversely proportional to R squared

Fill in the Blanks

The weight of an object is the force it experiences due to ______ (重力) or ______ (地心引力).

Multiple Choice

A 3 kg object on a frictionless horizontal surface is acted on by a 12 N horizontal force. What is the acceleration of the object?

• 4 m/s²

• 3 m/s²

• 6 m/s²

• 12 m/s²

Multiple Choice

A 50 kg cart on a rough surface is pushed by a 200 N horizontal force and accelerates at 3 m/s². What is the frictional force acting on the cart?

• 50 N

• 150 N

• 200 N

• 100 N

Multiple Choice

Compare the acceleration of a mass m on a smooth surface versus a rough surface when the same force F is applied. What is the main reason for the difference?

• The mass is different

• Friction is present on the rough surface

• The force is different

• Gravity is stronger on the rough surface

Multiple Choice

In a system with two masses connected and pulled by a force F on a frictionless surface, how do you calculate the acceleration of the system?

• a = F/m1

• a = F/(m1 + m2)

• a = F/m2

• a = F/(m1 - m2)

Fill in the Blanks

Fill in the blank: When a cart and a hanging mass are connected and the hanging mass is released, the acceleration of the system is given by a =

/ (M1 + M2).

Open Ended

Explain how the acceleration of a system changes when friction is introduced, using the example of a cart and hanging mass connected by a string.

Multiple Choice

Which of the following statements about the motion of the cart in the experiment described is correct?

• The cart moves with constant velocity between O and P.

• The cart accelerates between O and P.

• The cart decelerates between O and P.

• The cart is stationary between O and P.

Multiple Choice

A block of mass 8 kg is acted on by a force of 2 N and moves 3 meters in 6 seconds on a horizontal table. Calculate its acceleration.

• 0.17 m/s²

• 0.25 m/s²

• 0.33 m/s²

• 0.5 m/s²

Multiple Choice

How does an external force affect the acceleration of an object?

• It causes the object to accelerate.

• It causes the object to stop moving.

• It has no effect on the object's motion.

• It only affects the object's direction, not speed.