Distance, speed and, acceleration Flashcards
What is the formula for calculating speed?
Speed = Distance / Time
True or False: Speed is a vector quantity.
False
Fill in the blank: The unit of speed in the SI system is _____.
meters per second (m/s)
What is the average speed if a car travels 150 km in 3 hours?
50 km/h
What is the difference between speed and velocity?
Speed is scalar; velocity is vector and includes direction.
Calculate the acceleration if a car’s speed changes from 20 m/s to 50 m/s in 5 seconds.
Acceleration = 6 m/s²
True or False: Acceleration can be negative.
True
What is the formula for acceleration?
Acceleration = (Final Velocity - Initial Velocity) / Time
Fill in the blank: The unit of acceleration in the SI system is _____.
meters per second squared (m/s²)
What does a speed-time graph represent?
It represents how speed changes over time.
What is the area under a speed-time graph equal to?
Distance traveled
Define ‘constant speed’.
Constant speed means an object covers equal distances in equal intervals of time.
If a cyclist travels 30 km in 1.5 hours, what is their average speed?
20 km/h
True or False: An object in free fall has a constant acceleration of approximately 9.81 m/s².
True
What does ‘deceleration’ refer to?
A decrease in speed or negative acceleration.
Calculate the distance traveled if a car accelerates at 2 m/s² for 4 seconds from rest.
Distance = 16 m
What is the formula to calculate distance when acceleration is involved?
Distance = Initial Velocity × Time + 0.5 × Acceleration × Time²
Fill in the blank: The term for the rate of change of velocity is called _____.
acceleration
What is the significance of a horizontal line on a speed-time graph?
It indicates constant speed.
If a runner’s speed increases from 5 m/s to 10 m/s in 2 seconds, what is the runner’s acceleration?
2.5 m/s²
True or False: Velocity can remain constant while speed changes.
False
What does a negative acceleration indicate?
The object is slowing down.
How do you convert speed from km/h to m/s?
Divide by 3.6.
What is the formula for calculating the total distance when given time and average speed?
Distance = Average Speed × Time
