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Measurement and Motion in Physical Science Quiz

#1

Which of the following is a unit of measurement for distance?

Meter
Explanation

Meter is the SI unit of distance.

#2

What is the formula to calculate speed?

Speed = Distance / Time
Explanation

Speed is calculated by dividing distance traveled by the time taken.

#3

What is the SI unit of force?

Newton
Explanation

Newton is the SI unit of force.

#4

Which of the following is a scalar quantity?

Distance
Explanation

Distance is a scalar quantity as it only has magnitude and no direction.

#5

What is the SI unit of time?

Second
Explanation

Second is the SI unit of time.

#6

Which of the following is a measure of the inertia of an object?

Mass
Explanation

Mass is a measure of an object's inertia, representing its resistance to changes in motion.

#7

Which of the following represents a vector quantity?

Acceleration
Explanation

Acceleration has both magnitude and direction, making it a vector quantity.

#8

What is the acceleration of an object if it increases its velocity from 10 m/s to 30 m/s in 5 seconds?

6 m/s²
Explanation

Acceleration is the change in velocity divided by the time taken.

#9

Which of the following is an example of uniform motion?

A train moving with constant speed on a straight track
Explanation

Uniform motion is when an object travels with constant speed in a straight line.

#10

What is the equation to calculate displacement?

Displacement = Final Velocity - Initial Velocity
Explanation

Displacement is the change in position and is calculated as the difference between final and initial velocities.

#11

What is the formula to calculate average velocity?

Average Velocity = Displacement / Time
Explanation

Average velocity is calculated by dividing displacement by the time taken.

#12

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

Velocity
Explanation

The slope of a distance-time graph represents the object's velocity.

#13

A car travels 100 kilometers in 2 hours. What is its average speed?

60 km/h
Explanation

Average speed is calculated by dividing total distance by total time.

#14

If a ball is thrown vertically upwards, what is its acceleration at the highest point of its trajectory?

9.8 m/s² downward
Explanation

At the highest point, the ball's acceleration is equal to the acceleration due to gravity, directed downward.

#15

What is the difference between velocity and speed?

Velocity has direction while speed does not.
Explanation

Velocity is a vector quantity, indicating both speed and direction, whereas speed is a scalar quantity.

#16

A car accelerates uniformly from rest to a velocity of 20 m/s in 10 seconds. What is its acceleration?

5 m/s²
Explanation

Acceleration is the change in velocity divided by the time taken.

#17

In which of the following cases is work done on an object?

Lifting a box off the ground
Explanation

Work is done when a force is applied to move an object over a distance.

#18

What is the relationship between velocity and acceleration?

Acceleration is the derivative of velocity
Explanation

Acceleration is the rate of change of velocity with respect to time.

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