Acceleration
Acceleration is a measure of what changing over time?
Velocity
What are the three most common units for time?
Seconds, minutes, and hours
Velocity is a measure of what changing over time?
Displacement or distance
What is the difference between distance and displacement?
Distance is scalar and is the total path traveled. Displacement is a vector and is the distance between where you stop and finish
What is the average time for the following run times:
5s, 6s, 6s, 5s
5.5s
What are the most common units for acceleration?
m/s2 and km/hr2
How many seconds are in 1 hour?
3600 seconds
What is the difference between velocity and speed?
Velocity is a vector with a magnitude and direction. Speed is a scalar with just magnitude
Which is large a decameter or a decimeter?
Decameter
Why did the unfolded paper take the longest to hit the ground?
It has the most air resistance of the three objects dropped
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.
a=8.1 m/s2
Convert 4 hours into seconds
14,400 seconds
A student can run 100 meters in 10 seconds. What is the student’s final speed when they cross the finish line?
20 m/s
A car accelerates up a hill from rest at a rate of 1 m/s2 for 10 seconds. How far did the car travel?
50 m
The basketball and the unfolded paper hit the ground at different times because they have different masses? True or false, explain
False, it is because of air resistance
An athlete can sprint from rest to a speed of 25 meters/second in 4.5 seconds. How fast is their acceleration?
5.5 m/s2
A car traveling at 50 m/s accelerates at a rate of 2 m/s2 to a cruising speed of 100 m/s. How long did it take the car to reach its final speed?
25 seconds
A person is jogging at a pace of 3 meters/second accelerates to a speed of 12 meters/second2 for 6 seconds. What is this person’s final speed?
39 m/s
A car can accelerate from rest to a speed of 50 meters/second in 15 seconds. How much distance did the car travel while getting up to speed?
375 m
Why did the basketball and the crumpled-up piece of paper have similar fall times?
They both have minimal air resistance because of their shape.
A racecar accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car
a = 11.2 m/s2
A car starts from rest and accelerates at a rate of 5 km/hour2. How long will it take the car to reach 100 kilometers/hour?
20 seconds
A person running accelerates at a rate of 2m/s2 for 7 seconds. What is the person's final speed?
14 m/s
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.
1720 m
How tall is a building if it takes a ball 1.36s to hit the ground?
9.06 meters or 29.9 feet