Forces and Motion Worksheets

Name:

Date:

📚 Part A: Gravity, Weight, and Mass

1. Fill in the blanks using the words: gravity, mass, weight, kilograms, Newtons

_________ is the force that pulls objects towards Earth's centre. _________ is the amount of matter in an object, measured in _________. _________ is the force of gravity acting on an object's mass, measured in _________.

2. Calculate the weight using W = mg (where g = 10 N/kg on Earth)

a) A toy car has a mass of 0.5 kg. What is its weight? _________

b) A student has a mass of 60 kg. What is her weight? _________

3. Circle the correct answer:

When two objects of different masses are dropped from the same height:

The heavier object falls faster

The lighter object falls faster

Both objects fall at the same rate

4. Draw a diagram showing the force of gravity acting on a toy car on a ramp. Label the forces.

⚖️ Part B: Newton's Laws and Forces

5. Complete the sentences about Newton's Laws:

Newton's First Law states that an object will remain at _________ or move at constant _________ unless acted upon by an _________ force.

Newton's Second Law is written as the formula: F = _________

This means that acceleration is produced when a _________ force acts on an object.

6. Identify the forces acting on a toy car rolling down a ramp. Tick all that apply:

Gravity (pulling downward)

Normal force (from the ramp surface)

Friction (opposing motion)

Applied force (if pushed)

7. Explain the difference between balanced and unbalanced forces:

8. A toy car with mass 0.2 kg experiences a net force of 1.0 N. Calculate its acceleration using F = ma:

Acceleration = _________ m/s²

🔥 Part C: Friction and Motion

9. Fill in the blanks about friction:

Friction is a force that _________ motion between surfaces in contact. When a toy car rolls down a ramp, friction acts in the _________ direction to the motion, which _________ the car's acceleration.

10. Draw arrows on the diagram below to show the direction of friction force on a car moving down a ramp:

11. Circle the correct answer:

A toy car will roll faster down a ramp when:

The ramp surface is rough (high friction)

The ramp surface is smooth (low friction)

Friction has no effect on speed

12. In your own words, explain how friction affects the motion of falling objects: