Understanding Uniform Rectilinear Motion

What is the formula for average speed?

• Average Speed = Total Distance + Total Time

• Average Speed = Total Distance / Total Time

• Average Speed = Total Time / Total Distance

• Average Speed = Distance x Time

If a car travels 100 km in 2 hours, what is its average speed?

• 100 km/h

• 25 km/h

• 50 km/h

• 75 km/h

Define acceleration in your own words.

• Acceleration is the distance traveled over time.

• Acceleration is the force applied to an object.

• Acceleration is the change in velocity per unit of time.

• Acceleration is the speed of an object at a given moment.

What is the unit of acceleration?

• newtons (N)

• meters per second (m/s)

• kilometers per hour (km/h)

• meters per second squared (m/s²)

How do you calculate acceleration?

• a = v_f + v_i

• a = (v_f - v_i) / t

• a = v_i / t

• a = (v_f * t) + v_i

What does a horizontal line on a speed graph indicate?

• Constant speed

• Decreasing speed

• No speed

• Variable speed

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

• Acceleration

• Velocity

• Time

• Distance

What is a reference point in motion?

• A reference point is an object that changes position constantly.

• A reference point is a moving object used to track speed.

• A reference point is a measurement of time in motion.

• A reference point is a fixed location used to measure the position and motion of an object.

How can you determine if an object is in motion?

• An object is in motion if it is spinning in place.

• An object is in motion if it is stationary relative to the ground.

• An object is in motion if it is the same color as its surroundings.

• An object is in motion if its position changes relative to a reference point.

What is the difference between motion and rest?

• Motion is a state of being still; rest is a state of being active.

• Motion is the absence of change in position; rest is the change in position.

• Motion is the change in position; rest is the absence of change in position.

• Motion refers to objects at rest; rest refers to objects in motion.