FORCE,MOTION AND PRESSURE

Question 1

Definition of Force:

What is a force?

Answer 1

A force is a push or pull that can cause an object to change its state of motion.

Question 2

Types of Forces:

Name different types of forces.

Answer 2

• Gravity: Force of attraction between objects due to their mass.
• Friction: Force that opposes motion between surfaces in contact.
• Normal Force: Force exerted by a surface to support the weight of an object.
• Tension: Force transmitted through a string, rope, or cable when it’s pulled tight.
• Applied Force: Force exerted on an object by another object or person.

Question 3

Motion

Types of Motion:

What are the different types of motion?

Answer 3

• Linear Motion: Motion along a straight path.
Examples:1.A Car Moving Along a Straight Road
2.A Person Walking in a Straight Line

Circular Motion: Motion along a circular path.
Examples:1. Planets Orbiting the Sun

•	Rotational Motion: Motion around an axis or point. Examples: Turning a Steering Wheel  2. Earth’s Rotation

Random Motion:

Question 4

Speed, Velocity, Displacement and Acceleration:

Define speed and velocity.

Answer 4

• Speed: The distance traveled per unit of time (scalar quantity).
• Velocity: Speed in a specific direction (vector quantity).

Question 5

Describe acceleration. And Displacement

Answer 5

Acceleration is the rate of change of velocity over time. It can be positive (speeding up), negative (slowing down), or changing direction.

Displacement; Displacement is the change in position of an object relative to its starting point or initial position.

Question 6

Equations of Motion:

State the equations of motion.

Answer 6

• (Equation of motion for velocity).
• (Equation of motion for displacement).
• (Equation of motion relating initial velocity, final velocity, acceleration, and displacement).

Question 7

Pressure

Definition of Pressure:

What is pressure?

Answer 7

Pressure is the force exerted per unit area on a surface.

Question 8

Units of Pressure:

Name common units of pressure.

Answer 8

• Pascal (Pa):
• Atmosphere (atm): Standard atmospheric pressure at sea level is approximately 1 atm.
• Bar (bar):

Question 9

Give examples of pressure in everyday life.

Answer 9

• Atmospheric pressure supporting water in a straw.
• Pressure exerted by a car’s tires on the road surface.
• Hydraulic systems (e.g., car brakes, hydraulic lifts).

Question 10

Explain how pressure varies in fluids.

Answer 10

Pressure in a fluid increases with depth due to the weight of the fluid above (hydrostatic pressure).