Mechanics

What is the primary difference between distance and displacement?

• Distance is a scalar quantity, while displacement is a vector quantity.

• Distance measures the straight line between two points, while displacement measures the total path traveled.

• Distance can be negative, while displacement is always positive.

• Displacement is always longer than the distance.

If a person walks 4 meters east, then 3 meters west, what is the total displacement?

• 1 meter east
• 3 meters west
• 2 meters east
• 4 meters east

If a car travels 50 km north and then 50 km east, what is the magnitude of the displacement?

• 70.71 km
• 25 km
• 100 km
• 50 km

Velocity is defined as:

• he rate of change of displacement.

• The total distance traveled divided by the time taken.

• The speed of an object in a specific direction.

• The rate of change of speed.

What is acceleration?

• The rate of change of velocity.

• The rate of change of speed.

• The total distance traveled divided by time.

• The rate at which an object moves.

If a car's velocity increases from 20 m/s to 60 m/s in 4 seconds, what is its acceleration?

• 20 m/s²
• 15 m/s²
• 5 m/s²
• 10 m/s²

What does the slope of a distance-time graph represent?

• The time taken for an object to travel a distance.
• The speed or velocity of an object.
• The acceleration of an object.
• The distance covered by an object.

In a velocity-time graph, what does the area under the curve represent?

• Average speed of the object.
• Displacement of the object.
• Acceleration of the object.
• Total time taken by the object.

What does a horizontal line on a velocity-time graph indicate?

• Constant velocity
• No movement
• Decreasing velocity
• Increasing velocity

If the slope of a velocity-time graph is negative, what does this indicate?

• The object is decelerating.
• The object is moving at a constant speed.
• The object is accelerating.
• The object is stationary.